Biggest changeNet non-cash adjustments primarily consisted of $230.9 million of stock-based compensation expenses and $62.7 million of depreciation, amortization and other expenses, which were largely offset by an increase in deferred income taxes of $244.4 million primarily resulting from increased deferred tax assets associated with the capitalization of research and development costs under IRC Section 174.
Biggest changeNet non-cash adjustments primarily consisted of an increase in deferred income taxes of $492.9 million primarily resulting from increased deferred tax assets associated with the increase in deferred revenue and capitalization of research and development costs under IRC Section 174, which were largely offset by $355.4 million of stock-based compensation expenses. 63 During the year ended December 31, 2023, cash provided by operating activities was $2.0 billion, primarily from net income of $2.1 billion, offset by net non-cash adjustments to net income of $37.4 million, and a net change of $15.9 million in working capital requirements.
The change in working capital requirements primarily 61 consisted of a $655.5 million increase in inventory in response to a significant increase in business volume, a $101.5 million increase in accounts receivable due to the larger business volume and timing of shipments in the fourth quarter of 2023, as well as a $66.4 million increase in other assets primarily driven by increased deferred cost of sales associated with higher product revenue deferrals.
The change in working capital requirements primarily consisted of a $655.5 million increase in inventory in response to a significant increase in business volume, a $101.5 million increase in accounts receivable due to the larger business volume and timing of shipments in the fourth quarter of 2023, as well as a $66.4 million increase in other assets primarily driven by increased deferred cost of sales associated with higher product revenue deferrals.
We record a liability and a corresponding charge for non-cancellable, non-returnable purchase commitments with our contract manufacturers or suppliers for quantities in excess of our demand forecasts or that are considered obsolete due to manufacturing and engineering change orders resulting from design changes. 64 We use significant judgment in establishing our forecasts of future demand and obsolete material exposures.
We record a liability and a corresponding charge for non-cancellable, non-returnable purchase commitments with our contract manufacturers and suppliers for quantities in excess of our demand forecasts or that are considered obsolete due to manufacturing and engineering change orders resulting from design changes. We use significant judgment in establishing our forecasts of future demand and obsolete material exposures.
The extent of the impact of these factors on our operational and financial performance, including our ability to execute our business strategies and initiatives in the expected time frame, will depend on future developments, the impact on our customers, partners, employees, contract manufacturers and supply 55 chain, all of which continue to evolve and are unpredictable.
The extent of the impact of these factors on our operational and financial performance, including our ability to execute our business strategies and initiatives in the expected time frame, will depend on future developments, the impact on our customers, partners, employees, contract manufacturers and supply chain, all of which continue to evolve and are unpredictable.
We base our estimates, assumptions and judgments on historical experience and on various other factors that we believe to be reasonable under the circumstances. Different assumptions and judgments would change the estimates used in the preparation of our consolidated financial statements, which, in turn, could change the results from those reported.
We base our estimates, assumptions and judgments on 65 historical experience and on various other factors that we believe to be reasonable under the circumstances. Different assumptions and judgments would change the estimates used in the preparation of our consolidated financial statements, which, in turn, could change the results from those reported.
Overview Arista Networks is an industry leader in data-driven, client to cloud networking for large data center, campus and routing environments. Arista's platforms deliver availability, agility, automation, analytics and security through an advanced network operating stack.
Overview Arista Networks is an industry leader in data-driven, client to cloud networking for large AI, data center, campus and routing environments. Arista's platforms deliver availability, agility, automation, analytics and security through an advanced network operating stack.
We generally use a range of amounts to estimate SSP for individual products and services based on multiple factors including, but not limited to, product category, actual and expected volume, discounting policies, and end customer vertical and size.
We generally use a range of amounts to estimate SSP for individual products and services based on multiple factors including, but not limited to, product category, actual and expected volume, discounting policies, and customer vertical and size.
The preparation of these consolidated financial statements requires our management to make estimates, assumptions and judgments that affect the reported amounts of assets and liabilities at the date of the financial statements, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during 63 the applicable periods.
The preparation of these consolidated financial statements requires our management to make estimates, assumptions and judgments that affect the reported amounts of assets and liabilities at the date of the financial statements, disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the applicable periods.
In addition, any prolonged economic disruptions or further deterioration in the global economy could have a negative impact on demand from our customers in future periods, particularly in the enterprise market where we are continuing to expand our penetration. Accordingly, current results and financial conditions discussed herein may not be indicative of future operating results and trends.
Furthermore, any prolonged economic disruptions or further deterioration in the global economy could have a negative impact on demand from our customers in future periods, particularly in the enterprise market where we are continuing to expand our penetration. Accordingly, current results and financial conditions discussed herein may not be indicative of future operating results and trends.
We have experienced unpredictability in the timing of orders from these large customers primarily due to the time it takes these customers to evaluate, test, qualify and accept our newer products, the overall complexity of these large orders and changes in demand patterns specific to these customers, including reductions in capital expenditures by these customers and the impact of cost reduction and other efficiency efforts by these customers.
We have experienced unpredictability in the timing of orders from these large customers primarily due to the time it takes these customers to evaluate, test, qualify and accept our newer products, the overall complexity of these large orders and changes in demand patterns specific to these customers, including reductions in or changes in mix of capital expenditures by these customers and the impact of cost reduction and other efficiency efforts by these customers.
Off-balance sheet arrangements As of December 31, 2023, we did not have any relationships with any unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities, that would have been established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes.
Off-balance Sheet Arrangements As of December 31, 2024, we did not have any relationships with any unconsolidated entities or financial partnerships, such as entities often referred to as structured finance or special purpose entities, that would have been established for the purpose of facilitating off-balance sheet arrangements or other contractually narrow or limited purposes.
Recent Accounting Pronouncements Refer to the subheading titled “ Recently Adopted Accounting Pronouncements” in Note 1. Organization and Summary of Significant Accounting Policies of the Notes to Consolidated Financial Statements included in Part II, Item 8, of this Annual Report on Form 10-K. 65
Recent Accounting Pronouncements Refer to the subheading titled “ Recently Adopted Accounting Pronouncements” in Note 1. Organization and Summary of Significant Accounting Policies of the Notes to Consolidated Financial Statements included in Part II, Item 8, of this Annual Report on Form 10-K. 67
Sales and marketing expenses increased by $72.1 million, or 22.0%, for the year ended December 31, 2023 compared to 2022. The increase was primarily caused by increased personnel costs driven by headcount growth, in addition to increased sales and marketing events and field demonstration costs. General and administrative.
Sales and marketing Sales and marketing expenses increased by $72.1 million, or 22.0%, for the year ended December 31, 2023 compared to 2022. The increase was primarily caused by increased personnel costs driven by headcount growth, in addition to increased sales and marketing events and field demonstration costs.
The increase in our income taxes was largely due to an increase in pre-tax income, partly offset by an increase in tax benefits attributable to stock-based compensation. The decrease in our effective tax rate was primarily due to a 58 reduction of unrecognized tax benefits on uncertain tax positions due to the expiration of the statute of limitations.
The increase in our income taxes was largely due to an increase in pre-tax income, partly offset by an 62 increase in tax benefits attributable to stock-based compensation. The decrease in our effective tax rate was primarily due to a reduction of unrecognized tax benefits on uncertain tax positions due to the expiration of the statute of limitations.
The larger magnitude of these balances, combined with a reduction in customer demand-planning horizons and shifting customer product priorities, has resulted in increased risk that we may not be able to sell all of this inventory, which in turn has resulted, and may in the future result, in additional excess and obsolete inventory and supplier liability charges.
The magnitude of these balances, combined with a reduction in customer demand-planning horizons and shifting customer product priorities, has resulted in increased risk that we may not be able to sell all of this inventory, which in turn has resulted in additional excess and obsolete inventory and supplier liability charges.
Property project During the year ended December 31, 2021, we purchased land and the improvements thereon in Santa Clara, California to construct a building for office and lab space.
Property project During the year ended December 31, 2021, we purchased land and the improvements thereon in Santa Clara, California to construct a building for office, lab and data center space.
Year Ended December 31, 2023 2022 Change in $ % of Revenue $ % of Revenue $ % Provision for income taxes $ 334,705 5.7 % $ 229,350 5.2 % $ 105,355 45.9 % Effective tax rate 13.8 % 14.5 % Our provision for income taxes increased in 2023, as compared to 2022, and our effective tax rate decreased in 2023, as compared to 2022.
Provision for Income Taxes (in thousands, except percentages) Year Ended December 31, 2023 2022 Change in $ % of Revenue $ % of Revenue $ % Provision for income taxes $ 334,705 5.7 % $ 229,350 5.2 % $ 105,355 45.9 % Effective tax rate 13.8 % 14.5 % Our provision for income taxes increased in 2023, as compared to 2022, and our effective tax rate decreased in 2023 as compared to 2022.
The increase was primarily due to a $84.1 million increase in personnel costs driven by an increase in headcount, and a $40.7 million increase in new product introduction costs, including non-recurring engineering costs and prototype expenses as we expand our product portfolio. 57 Sales and marketing.
The increase was primarily due to a $84.1 million increase in personnel costs driven by an increase in headcount, and a $40.7 million increase in new product introduction costs, including non-recurring engineering costs and prototype expenses as we expand our product portfolio.
Our future capital requirements will depend on many factors, including our growth rate, the timing and extent of our spending to support research and development activities, the timing and cost of establishing additional sales and marketing capabilities, the introduction of new and enhanced product and service offerings, our costs associated with supply chain activities, including access to outsourced manufacturing, our costs related to investing in or acquiring complementary or strategic businesses and technologies, the continued market acceptance of our products, capital expenditures and stock repurchases.
Our future capital requirements will depend on many factors, including our growth rate, the timing and extent of our spending to support research and development activities, the timing and cost of establishing additional sales and marketing capabilities, the introduction of new and enhanced product and service offerings, our costs associated with supply chain activities, including access to outsourced manufacturing, our costs related to investing in or acquiring complementary or strategic businesses and technologies, the continued market acceptance of our products, stock repurchases, and capital expenditures, including the construction of a new building in Santa Clara, California.
We expect our gross margin to fluctuate over time, depending on the factors described above. Gross margin increased from 61.1% for the year ended December 31, 2022 to 61.9% for the year ended December 31, 2023.
We expect our gross margin to fluctuate over time, depending on the factors described above. Gross margin increased from 61.9% for the year ended December 31, 2023 to 64.1% for the year ended December 31, 2024.
These estimates depend on our assessment of current and expected orders from our customers, product development plans and current sales levels. In addition, industry-wide supply chain shortages have resulted in extended lead times for components, and we were required to extend the time horizon of our demand forecasts.
These estimates depend on our assessment of current and expected orders from our customers, product development plans and current sales levels. In addition, industry-wide supply chain shortages in prior years have resulted in extended lead times for some 66 components, and consequently we were required to extend the time horizon of our demand forecasts.
Other Income, Net (in thousands, except percentages) Other income (expense), net consists primarily of interest income from our cash, cash equivalents and marketable securities, gains and losses on our marketable securities and strategic investments, and foreign currency transaction gains and losses.
Other Income, Net (in thousands, except percentages) Other income (expense), net consists primarily of interest income from our cash, cash equivalents and marketable securities, and gains and losses on our strategic investments.
As of December 31, 2023, the incremental cash tax impact resulting from the regulation was approximately $191.7 million for the year, of which substantially all the liability has been paid. It is anticipated that IRC Section 174 will result in cash tax outlays exceeding our income tax expense over the next three years unless the current legislation is changed.
As of December 31, 2024, the incremental cash tax impact resulting from the regulation was approximately $210.2 million for the year, of which substantially all the liability has been paid. It is anticipated that IRC Section 174 will result in cash tax outlays exceeding our income tax expense over the next three years unless the current legislation is changed.
Our future success is dependent upon our ability to continue to evolve and adapt to our rapidly changing environment. We must also continue to develop 54 market-leading products and features that address the needs of our existing and new customers, and increase sales in the enterprise data center switching, and campus workspace markets.
Our future success is dependent upon our ability to continue to evolve and adapt to our rapidly changing environment. We must also continue to develop market-leading products and software features that address the changing needs of our existing and new customers, and increase sales in the cloud, AI and enterprise data center ethernet switching/routing markets, and campus workspace markets.
Gross margin, or gross profit as a percentage of revenue, has been and will continue to be affected by a variety of factors, including pricing pressure on our products and services due to competition, the mix of sales to large customers who generally receive lower pricing, the mix of products sold, manufacturing-related costs, including costs associated with supply chain sourcing activities, merchant silicon costs, and excess/obsolete inventory charges, including charges for excess/obsolete component inventory held by our contract manufacturers and suppliers.
Gross margin, or gross profit as a percentage of revenue, has been and will continue to be affected by a variety of factors, including pricing pressure on our products and services due to competition, the mix of sales to large customers who generally receive lower pricing, the mix of products sold, manufacturing-related costs, including costs associated with supply chain sourcing activities, merchant silicon costs, and excess/obsolete inventory and supplier liability charges.
In connection with the TCJA, effective from January 1st, 2022, the TCJA eliminates the option to deduct research and development expenditures currently and requires taxpayers to capitalize and amortize them over five or fifteen years pursuant to IRC Section 174.
In connection with the TCJA, effective from January 1st, 2022, the TCJA eliminates the option to deduct research and development expenditures currently and requires taxpayers to capitalize and amortize them over five or fifteen years pursuant to Internal Revenue Code (“IRC”) Section 174.
Results of Operations Year Ended December 31, 2023 Compared to Year Ended December 31, 2022 Revenue, Cost of Revenue and Gross Margin (in thousands, except percentages) Year Ended December 31, 2023 2022 Change in $ % of Revenue $ % of Revenue $ % Revenue Product $ 5,029,493 85.8 % $ 3,716,079 84.8 % $ 1,313,414 35.3 % Service 830,675 14.2 665,231 15.2 165,444 24.9 Total revenue 5,860,168 100.0 4,381,310 100.0 1,478,858 33.8 Cost of revenue Product 2,061,167 35.2 1,573,629 35.9 487,538 31.0 Service 168,720 2.9 131,985 3.0 36,735 27.8 Total cost of revenue 2,229,887 38.1 1,705,614 38.9 524,273 30.7 Gross profit $ 3,630,281 61.9 % $ 2,675,696 61.1 % $ 954,585 35.7 % Gross margin 61.9 % 61.1 % Revenue by Geography (in thousands, except percentages) Year Ended December 31, 2023 % of Total 2022 % of Total Americas $ 4,651,193 79.4 % $ 3,462,621 79.0 % Europe, Middle East and Africa 670,960 11.4 529,800 12.1 Asia-Pacific 538,015 9.2 388,889 8.9 Total revenue $ 5,860,168 100.0 % $ 4,381,310 100.0 % Revenue Product revenue primarily consists of sales of our switching and routing products, and related network applications.
Year Ended December 31, 2023 Compared to Year Ended December 31, 2022 Revenue, Cost of Revenue and Gross Margin (in thousands, except percentages) 60 Year Ended December 31, 2023 2022 Change in $ % of Revenue $ % of Revenue $ % Revenue Product $ 5,029,493 85.8 % $ 3,716,079 84.8 % $ 1,313,414 35.3 % Service 830,675 14.2 665,231 15.2 165,444 24.9 Total revenue 5,860,168 100.0 4,381,310 100.0 1,478,858 33.8 Cost of revenue Product 2,061,167 35.2 1,573,629 35.9 487,538 31.0 Service 168,720 2.9 131,985 3.0 36,735 27.8 Total cost of revenue 2,229,887 38.1 1,705,614 38.9 524,273 30.7 Gross profit $ 3,630,281 61.9 % $ 2,675,696 61.1 % $ 954,585 35.7 % Gross margin 61.9 % 61.1 % Revenue by Geography (in thousands, except percentages) Year Ended December 31, 2023 % of Total 2022 % of Total Americas $ 4,651,193 79.4 % $ 3,462,621 79.0 % Europe, Middle East and Africa 670,960 11.4 529,800 12.1 Asia-Pacific 538,015 9.2 388,889 8.9 Total revenue $ 5,860,168 100.0 % $ 4,381,310 100.0 % Revenue Product revenue increased by $1.3 billion, or 35.3%, for the year ended December 31, 2023 compared to 2022.
Accrued Income Taxes As of December 31, 2023, we have recorded long-term tax liabilities of $95.8 million related to uncertain tax positions; however, we are unable to make a reasonably reliable estimate of the timing of settlement, if any, of these future payments.
Accrued Income Taxes As of December 31, 2024, we have recorded long-term tax liabilities of $110.0 million related to uncertain tax positions; however, we are unable to make a reasonably reliable estimate of the timing of settlement, if any, of these future payments.
Leases We have operating lease arrangements for office space, data center, equipment and other corporate assets. As of December 31, 2023, we had lease payment obligations, net of immaterial sublease income, of $72.0 million, with $24.0 million payable within 12 months.
Leases We have operating lease arrangements for office space, data center, equipment and other corporate assets. As of December 31, 2024, we had lease payment obligations, net of immaterial sublease income, of $65.3 million, with $24.7 million payable within 12 months.
We expect other income (expense), net may fluctuate in the future as a result of the re-measurement of our equity investments upon the occurrence of either observable price changes or impairments, changes in interest rates or returns on our cash and cash equivalents and marketable securities, and foreign currency exchange rate fluctuations.
We expect other income (expense), net may fluctuate in the future as a result of changes in interest rates, changes in our cash, cash equivalents and marketable securities balances, and the re-measurement of our equity investments upon the occurrence of either observable price changes or impairments.
General and administrative expenses consist primarily of personnel costs and professional services costs for our finance, human resources, legal and certain executive functions. Our professional services costs are primarily related to external legal, accounting, and tax services. General and administrative expenses increased by $25.8 million, or 27.7%, for the year ended December 31, 2023 compared to 2022.
General and administrative expenses consist primarily of personnel costs and professional services costs for our finance, human resources, legal and certain executive functions. Our professional services costs are primarily related to external legal, accounting, and tax services. General and administrative expenses increased by $3.6 million, or 3.0%, for the year ended December 31, 2024 compared to 2023.
Liquidity and Capital Resources Our principal sources of liquidity are cash, cash equivalents, marketable securities, and cash generated from operations. As of December 31, 2023, our total balance of cash, cash equivalents and marketable securities was $5.0 billion, of which approximately $770.3 million was held outside the U.S. in our foreign subsidiaries.
Liquidity and Capital Resources Our principal sources of liquidity are cash, cash equivalents, marketable securities, and cash generated from operations. As of December 31, 2024, our total balance of cash, cash equivalents and marketable securities was $8.3 billion, of which approximately $1.4 billion was held outside the U.S. in our foreign subsidiaries.
Operating Expenses (in thousands, except percentages) Our operating expenses consist of research and development, sales and marketing, and general and administrative expenses. The largest component of our operating expenses is personnel costs. Personnel costs consist of wages, benefits, bonuses and, with respect to sales and marketing expenses, sales commissions. Personnel costs also include stock-based compensation and travel-related expenses.
The largest component of our operating expenses is personnel costs. Personnel costs consist of wages, benefits, bonuses and, with respect to sales and marketing expenses, sales commissions. Personnel costs also include stock-based compensation and travel-related expenses.
Cost of service revenue primarily consists of personnel and other costs associated with our global customer support and services organizations. Cost of revenue increased by $524.3 million, or 30.7% for the year ended December 31, 2023 compared to 2022.
Cost of service revenue primarily consists of 58 personnel and other costs associated with our global customer support and services organizations. Cost of revenue increased by $282.0 million, or 12.6% for the year ended December 31, 2024 compared to 2023.
Year Ended December 31, 2023 2022 Change in $ % of Revenue $ % of Revenue $ % Other income (expense), net: Interest income $ 152,421 2.6 % $ 27,556 0.6 % $ 124,865 453.1 % Gain (loss) on strategic investments 18,699 0.3 27,479 0.6 (8,780) (32.0) Other income (expense), net (6,343) (0.1) (345) — (5,998) 1,738.6 Total other income, net $ 164,777 2.8 % $ 54,690 1.2 % $ 110,087 201.3 % The favorable movement in other income (expense), net, during the year ended December 31, 2023 as compared to 2022 was driven by an increase in interest income of $124.9 million due to an increase in our cash and investments balances and higher interest rates.
Other Income, Net (in thousands, except percentages) Year Ended December 31, 2023 2022 Change in $ % of Revenue $ % of Revenue $ % Other income, net: Interest income $ 152,421 2.6 % $ 27,556 0.6 % $ 124,865 453.1 % Other income (expense), net 12,356 0.2 27,134 0.6 (14,778) (54.5) Total other income, net $ 164,777 2.8 % $ 54,690 1.2 % $ 110,087 201.3 % The favorable movement in other income (expense), net, during the year ended December 31, 2023 as compared to 2022 was driven by an increase in interest income of $124.9 million due to an increase in our cash and investments balances and higher interest rates.
Cash Flows Year Ended December 31, 2023 2022 2021 (in thousands) Cash provided by operating activities $ 2,034,014 $ 492,813 $ 1,015,856 Cash provided by (used in) investing activities (687,454) 216,327 (925,562) Cash (used in) financing activities (83,749) (654,601) (360,882) Effect of exchange rate changes 675 (3,611) (1,816) Net increase (decrease) in cash, cash equivalents and restricted cash $ 1,263,486 $ 50,928 $ (272,404) Cash Flows from Operating Activities Our operating activities consist of net income, adjusted for certain non-cash items, and changes in assets and liabilities.
Cash Flows Year Ended December 31, 2024 2023 2022 (in thousands) Cash provided by operating activities $ 3,708,235 $ 2,034,014 $ 492,813 Cash provided by (used in) investing activities (2,457,354) (687,454) 216,327 Cash (used in) financing activities (421,810) (83,749) (654,601) Effect of exchange rate changes (4,767) 675 (3,611) Net increase in cash, cash equivalents and restricted cash $ 824,304 $ 1,263,486 $ 50,928 Cash Flows from Operating Activities Our operating activities consist of net income, adjusted for certain non-cash items, and changes in operating assets and liabilities.
Inventory Valuation and Contract Manufacturer/Supplier Liabilities Inventories primarily consist of finished goods and strategic components, primarily integrated circuits. Inventories are stated at the lower of cost (computed using the first-in, first-out method) and net realizable value. Manufacturing overhead costs and inbound shipping costs are included in the cost of inventory.
Inventory Valuation and Contract Manufacturer/Supplier Liabilities Inventories primarily consist of finished goods, including evaluation inventory held at customers or partners, and strategic components, primarily integrated circuits. Inventories are stated at the lower of cost (computed using the first-in, first-out method) and net realizable value.
As the global supply chain has experienced some improvements and as customer lead times have been reduced from their peak, we have seen and expect to continue to see a commensurate reduction in visibility to customer demand and a gradual return to shorter demand-planning horizons resulting in lower demand levels.
As a result, some shipments against these previously committed demand/deployment plans have extended into 2025. As the global supply chain has experienced some improvements and as customer lead times have been reduced from their peak, we have seen and expect to continue to see a commensurate reduction in visibility to customer demand and a gradual return to shorter demand-planning horizons.
As customer lead times reduce more broadly, we have seen and expect to continue to see a commensurate reduction in visibility to customer demand and a gradual return to shorter demand-planning horizons resulting in lower demand levels.
We have experienced some improvements in the supply chain throughout the year, and as customer lead times reduce more broadly, we have seen and expect to continue to see a commensurate reduction in visibility to customer demand and a gradual return to shorter demand-planning horizons.
Arista EOS, combined with a set of network applications and our Ethernet switching and routing platforms using best of breed merchant silicon, provides customers with a highly competitive and diversified portfolio of products with improved price/performance and time to market.
At the core of Arista’s platform is Arista EOS, a modernized publish-subscribe state-sharing networking operating system. Arista EOS, combined with a set of network applications and our Ethernet switching and routing platforms using best of breed merchant silicon, provides customers with a highly competitive and diversified portfolio of products with improved price/performance and time to market.
Year Ended December 31, 2023 2022 Change in $ % of Revenue $ % of Revenue $ % Operating expenses: Research and development $ 854,918 14.6 % $ 728,394 16.6 % $ 126,524 17.4 % Sales and marketing 399,034 6.8 326,955 7.5 72,079 22.0 General and administrative 119,080 2.0 93,241 2.1 25,839 27.7 Total operating expenses $ 1,373,032 23.4 % $ 1,148,590 26.2 % $ 224,442 19.5 % Research and development.
In addition, our gross margin benefited in 2023 from the leverage of relatively fixed overhead costs on a higher revenue base. 61 Operating Expenses (in thousands, except percentages) Year Ended December 31, 2023 2022 Change in $ % of Revenue $ % of Revenue $ % Operating expenses: Research and development $ 854,918 14.6 % $ 728,394 16.6 % $ 126,524 17.4 % Sales and marketing 399,034 6.8 326,955 7.5 72,079 22.0 General and administrative 119,080 2.0 93,241 2.1 25,839 27.7 Total operating expenses $ 1,373,032 23.4 % $ 1,148,590 26.2 % $ 224,442 19.5 % Research and development Research and development expenses increased by $126.5 million, or 17.4%, for the year ended December 31, 2023 compared to 2022.
As of December 31, 2023, we had $1,586.7 million of such purchase obligations, of which $1,547.2 million are expected to be received within 12 months, and $39.5 million are e xpected to be received after one year.
As of December 31, 2024, we had $3.1 billion of such purchase obligations, of which $2.8 billion are expected to be received within 12 months, and $0.3 billion are e xpected to be received after one year.
During the year ended December 31, 2023, cash provided by operating activities was $2.0 billion, primarily from net income of $2.1 billion, offset by net non-cash adjustments to net income of $37.4 million, and a net change of $15.9 million in working capital requirements.
During the year ended December 31, 2024, cash provided by operating activities was $3.7 billion, primarily from net income of $2.9 billion along with a net decrease in working capital requirements of $985.2 million, offset by net non-cash adjustments to net income of $129.0 million.
These changes reflect an improvement in product margins driven by a lower mix of revenue from our larger customers, partly offset by an increase in excess/obsolete inventory-related charges. In addition, our gross margin benefited in 2023 from the leverage of relatively fixed overhead costs on a higher revenue base.
These changes reflect an improvement in product margins driven by a lower mix of revenue from our larger customers, partly offset by an increase in excess/obsolete inventory-related charges.
In addition, service revenue increased by $94.9 million, or 16.6%, in the year ended December 31, 2022 compared to 2021, as a result of continued growth in initial and renewal PCS contracts as our customer installed base continued to expand.
In addition, service revenue increased by $288.5 million, or 34.7%, for the year ended December 31, 2024 compared to 2023, as a result of continued growth in initial and renewal support contracts as our customer installed base has continued to expand.
For further information regarding income taxes and the impact on our results of operations and financial position, refer to Note 8. Income Taxes of the Notes to Consolidated Financial Statements included in Part II, Item 8, of this Annual Report on Form 10-K.
Income Taxes of the Notes to Consolidated Financial Statements included in Part II, Item 8, of this Annual Report on Form 10-K.
During the year ended December 31, 2022, cash used in financing activities was $654.6 million, consisting primarily of common stock repurchases of $670.3 million and taxes paid of $32.7 million upon vesting of restricted stock units, offset partially by proceeds from the issuance of common stock under employee equity incentive plans of $48.4 million.
During the year ended December 31, 2024, cash used in financing activities was $421.8 million, consisting of payments for repurchases of our common stock from the open market of $423.6 million and employee taxes withheld and paid of $58.4 million upon vesting of restricted stock units, partially offset by proceeds from the issuance of common stock under employee equity incentive plans of $60.2 million.
This prioritization of AI related infrastructure investment has come in conjunction with the announcement of various cost reduction measures, including optimization and increased efficiency in non-AI related capital expenditures.
This prioritization and acceleration of AI related infrastructure investment has at times come in conjunction with a reduction or changes in the mix of previously planned purchases and various cost reduction measures by these customers, including optimization and increased efficiency in non-AI related capital expenditures.
In addition, any continued or renewed disruption in manufacturing and supply resulting from these factors could negatively impact our business.
In addition, any continued or renewed disruption in manufacturing and supply and new or enhanced tariffs imposed by the U.S. and other countries resulting from these factors could negatively 57 impact our business.
Research and development expenses increased by $126.5 million, or 17.4%, for the year ended December 31, 2023 compared to 2022.
Research and development expenses increased by $141.8 million, or 16.6%, for the year ended December 31, 2024 compared to 2023.
For example, sales to our end customers Microsoft and Meta Platforms represented 18% and 21% of our total revenue, respectively, in fiscal 2023, 16% and 26% of our total revenue, respectively, in fiscal 2022 and, 15% and less than 10% of our total revenue, respectively in fiscal 2021.
For example, sales to our end customer Microsoft represented 20%, 18% and 16% of our total revenue for the years ended 2024, 2023 and 2022 respectively. And sales to our end customer Meta Platforms represented 15%, 21% and 26% of our total revenue, respectively for the years ended 2024, 2023 and 2022.
In addition, inflation pressure in our supply chain, scarcity of some materials needed to build our products and disruptions to our manufacturing process have increased our cost of revenue and have impacted, and may continue to negatively impact our gross margin.
In addition, inflation pressure in our supply chain and scarcity of some materials needed to build our products have increased our cost of revenue and have impacted, and may continue to negatively impact our gross margin. These cost pressures may be increased if escalating tariff and non-tariff international trade measures continue to proliferate in or affect our supply chain.
These increases were primarily driven by a corresponding increase in product and service revenues, combined with an increase in provisions for excess/obsolete inventory and supplier liability charges.
These increases were primarily driven by a corresponding increase in product and service revenues, combined with an increase in provisions for excess/obsolete inventory and supplier liability charges. Gross margin increased from 61.1% for the year ended December 31, 2022 to 61.9% for the year ended December 31, 2023.
The Repurchase Program does not obligate us to acquire any of our common stock and may be suspended or discontinued by the company at any time without prior notice. During the three months ended December 31, 62 2023, we did not repurchase any shares.
The Repurchase Programs do not obligate us to acquire any of our common stock, and may be suspended or discontinued by the company at any time without prior notice.
Material cash requirements Our material cash requirements will have an impact on our future liquidity. Our material cash requirements represent material expected or contractually committed future payment obligations. We believe that we will be able to fund these obligations through cash generated from operations and from our existing balances of cash, cash equivalents and marketable securities.
We believe that we will be able to fund these obligations through cash generated from operations and from our existing balances of cash, cash equivalents and marketable securities.
We limit the amount of revenue recognition for contracts containing forms of variable consideration, such as future performance obligations, customer-specific returns, and acceptance or refund obligations.
We limit the amount of revenue recognition for contracts containing forms of variable consideration, such as future performance obligations, customer-specific returns, and acceptance or refund obligations. We defer revenue recognition on customer contracts for new products or use cases, which contain customer-specified requirements that must be met prior to acceptance.
Since Arista’s inception, our founders have reimagined cloud networks for performance, scale and programmability with a focus on differentiating in three ways: uncompromising quality, advanced open and standards-based technology and a robust quality assurance capability built on a suite of automated diagnostics. At the core of Arista’s platform is Arista’s EOS, a modernized publish-subscribe state-sharing networking operating system.
Since Arista’s inception, our founders have reimagined cloud networks for performance, scale and programmability with a focus on differentiating in three ways: uncompromising reliability built on the foundation of robust quality assurance capabilities with a suite of automated diagnostics, advanced open and standards-based technology and intelligent automation to decrease the manual workload on the operator.
During the year ended December 31, 2023, cash used in investing activities was $687.5 million, consisting of purchases of available-for-sale securities of $2.6 billion, and purchases of property, equipment and intangible assets of $34.4 million, partially offset by proceeds of $1.9 billion from maturities of marketable securities, and proceeds from the sale of marketable securities of $67.3 million, During the year ended December 31, 2022, cash provided by investing activities was $216.3 million, consisting of proceeds of $1.6 billion from maturities of marketable securities, proceeds from the sale of marketable securities of $193.8 million, partially offset by purchases of available-for-sale securities of $1.4 billion, $145.1 million for business acquisitions, purchases of property, equipment and intangible assets of $44.6 million, and investments and notes receivable in private companies of $12.7 million.
During the year ended December 31, 2023, cash used in investing activities was $687.5 million, consisting of purchases of available-for-sale securities of $2.6 billion, and purchases of property, equipment and intangible assets of $34.4 million, partially offset by proceeds of $1.9 billion from maturities of marketable securities, and proceeds from the sale of marketable securities of $67.3 million, Cash Flows from Financing Activities Our financing activities consist of proceeds from the issuance of our common stock under employee equity incentive plans, offset by repurchases of our common stock.
Sales and marketing expenses consist primarily of personnel costs, marketing, trade shows, and other promotional activities, and an allocated portion of facility and IT costs. We expect our sales and marketing expenses to increase in absolute dollars as we continue to expand our sales and marketing efforts worldwide.
Sales and marketing expenses consist primarily of personnel costs, marketing, trade shows, and other promotional activities, and an allocated portion of facility and IT costs.
While inventory and working capital levels may remain elevated in the near term, we expect that purchase commitments will continue to decline as supplier lead times shorten. There is however no guarantee that all suppliers will meet their commitments in the time frame committed or that actual customer demand will directly match our demand forecasts.
In addition, w e expect that our inventory and purchase commitments will remain volatile as we ramp new product introductions. There is however no guarantee that all suppliers will meet their commitments in the time frame committed or that actual customer demand will directly match our demand forecasts.
As we exit 2023, the business is emerging from a period of unprecedented global supply chain disruptions. Throughout this period, we made significant supply chain investments, including funding additional working capital and incremental purchase commitments in response to extended visibility to deployment plans from our customers.
Throughout this period, we made significant supply chain investments, including funding additional working capital and incremental purchase commitments in response to extended visibility to deployment plans from our customers. We have worked closely with our contract manufacturers and supply chain partners to ramp production following a period of delayed component sourcing and workforce disruptions.
I n addition, an increased focus on the deployment of AI enabled solutions by these customers has accelerated the need for advanced technology offerings including some offerings from potential new market entrants.
In addition, we typically provide pricing discounts to large customers, which reduces gross margins for the period in which such sales occur. We believe an increased focus on the deployment of AI enabled solutions by our large customers has accelerated the need for advanced technology offerings including some offerings from potential new market entrants.
Product revenue increased by $1.3 billion, or 35.3%, for the year ended December 31, 2023 compared to 2022. These increases reflect increased shipments of our switching and routing products across our customer base, including improved supply availability for our enterprise customers.
These increases reflect increased shipments of our switching and routing products across our customer base, including improved supply availability for our enterprise customers.
The increase was primarily caused by increased personnel costs driven by headcount growth. General and administrative General and administrative expenses increased by $10.1 million, or 12.2%, for the year ended December 31, 2022 compared to 2021.
General and administrative General and administrative expenses increased by $25.8 million, or 27.7%, for the year ended December 31, 2023 compared to 2022. The increase was primarily caused by an increase in personnel costs driven by increased stock-based compensation, and increased legal and professional fees.
In some instances, such measures have had, and may continue to have, an impact on certain current or future projects and have reduced our visibility to customer demand, increased our risk of excess and obsolescence charges on existing products, and may result in reductions in future demand and negatively impact our revenue, financial condition, business or prospects.
In some instances, such measures have had, and may continue to have, an impact on certain current or future projects and have reduced our visibility to customer demand and may result in a reduction or uncertainty in the timing of orders from these large customers and increase the risk of charges for excess and obsolete inventory.
We record a provision when inventory is determined to be in excess of anticipated demand, or obsolete, to adjust inventory to its estimated realizable value. Our contract manufacturers procure components and assemble products on our behalf based on our forecasts.
Manufacturing overhead costs and inbound shipping costs are included in the cost of inventory. We record a provision when inventory is determined to be in excess of anticipated demand, or obsolete, to adjust inventory to its estimated realizable value.
International revenu es as a percentage of our total revenues decreased fro m 21.0% in 2 022 to 20.6% in 2023, which was primarily driven by changes in the geographic mix of sales to our large global customers. 56 Cost of Revenue and Gross Margin Cost of product revenue primarily consists of amounts paid for inventory to our third-party contract manufacturers and merchant silicon vendors, overhead costs of our manufacturing operations, including freight, and other costs associated with manufacturing our products and managing our inventory and supply chain.
Cost of Revenue and Gross Margin Cost of product revenue primarily consists of amounts paid for inventory to our third-party contract manufacturers and merchant silicon vendors, overhead costs of our manufacturing operations, including freight, and other costs associated with manufacturing our products and managing our inventory and supply chain.
Our operating cash-flows have also been and may continue to be negatively impacted by significant component inventories on hand or at our contract manufacturers. While we have seen improvements in our supply chain and manufacturing operations, any remaining or new supply chain and manufacturing related constraints could negatively impact our business in future periods.
We also may not be able to pass on the full burden of the increase in trade-related costs to our customers, which could further negatively impact our gross margin. While we have seen improvements in our supply chain and manufacturing operations, any remaining or new supply chain and manufacturing related constraints could negatively impact our business in future periods.
The increase in our income taxes was due to an increase in pre-tax income. The increase in our effective tax rate was largely attributable to a decrease in the proportion of tax benefits attributable to stock-based compensation versus total pre-tax income.
The increase in our income taxes was largely due to an increase in pre-tax income, partly offset by a decrease in our effective tax rate due to favorable changes in state taxes and tax benefits attributable to stock-based compensation. For further information regarding income taxes and the impact on our results of operations and financial position, refer to Note 8.
This increased capacity has allowed us to ship products against previously committed demand/deployment plans and accelerate some deployments where needed, while trying to limit building customer inventory, and to some extent balancing customer lead times with those currently experienced from our key suppliers. As a result, some shipments against these previously committed demand/deployment plans have extended into 2024.
Increased capacity has allowed us to ship products against previously committed demand/deployment plans and accelerate some deployments where needed, while trying to balance our customers' requirements and lead times with the availability of key components and products and lead times of our key suppliers and contract manufacturers.
The estimated capital expenditures related to this project is expected to be approximately $80.0 to $100.0 million for the year ending 2024, with construction expected to commence in the second half of 2024.
The estimated capital expenditures related to this project is expected to be approximately $235.0 million to $260.0 million for the next two years, with construction expected to be completed by the end of fiscal 2026.
Historically, large purchases by a relatively limited number of customers have accounted for a significant portion of our revenue.
The percentage of revenue derived from these customers during the current fiscal year was approximately 48% from Cloud and AI Titans, 35% from Enterprise and 17% from Providers. Historically, large purchases by a relatively limited number of customers have accounted for a significant portion of our revenue.
International revenu es as a percentage of our total revenues decreased fro m 26.8% in 2 021 to 21.0% in 2022, w hich was primarily driven by increased purchases from large cloud customers in our Americas region.
International revenu es as a percentage of our total revenues decreased fro m 20.6% in 2023 to 18.2% in 2024, which was primarily driven by changes in the geographic mix of sales to our large global customers.
Macroeconomic Update Global economic and business activities continue to face widespread macroeconomic uncertainties, including inflation, monetary policy shifts, recession risks, and potential supply chain and other disruptions such as the Russia-Ukraine and Israel-Hamas conflicts, the Houthi attacks on marine vessels in the Red Sea, and the U.S. trade war with China.
Macroeconomic Update Global economic and business activities continue to face widespread macroeconomic uncertainties, including the effects of, among other things, inflation, monetary policy shifts, recession risks, potential supply chain disruptions, changes in the U.S. administration, geopolitical pressures and escalating international trade measures. Our business is emerging from a period of unprecedented global supply chain disruptions.
Given these shipment and order patterns, near term revenue trends may not be solely reflective of current demand levels, but as discussed above will benefit from demand/deployment plans that had been previously committed. While inventory and working capital levels may remain elevated in the near term, we expect that purchase commitments will continue to decline as supplier lead times shorten.
Given the timing and prioritization of customer orders and shipment patterns, as well as the timing and outcome of customer trials and contracts with acceptance periods, near term revenue trends may not be reflective of current demand levels, and as discussed above will also benefit from demand/deployment plans that have been previously committed.
As of December 31, 2023, the remaining authorized amount for repurchases under the Repurchase Program was $144.5 million. Refer to Note 6. Stockholders' Equity and Stock-Based Compensation of the Notes to Consolidated Financial Statements included in Part II, Item 8, of this Annual Report on Form 10-K for further discussion.
Stockholders' Equity and Stock-Based Compensation of the Notes to Consolidated Financial Statements included in Part II, Item 8, of this Annual Report on Form 10-K for further discussion. 64 Material Cash Requirements Our material cash requirements will have an impact on our future liquidity. Our material cash requirements represent material expected or contractually committed future payment obligations.
The increase was primarily due to a $68.6 million increase in personnel costs driven by an increase in headcount, and a $57.5 million increase in new product introduction costs, including third-party engineering and other product development costs. Sales and marketing Sales and marketing expenses increased by $40.8 million, or 14.3%, for the year ended December 31, 2022 compared to 2021.
The increase was primarily due to a $64.9 million increase in personnel costs driven by an increase in headcount, and a $52.3 million increase in new product introduction costs, including non-recurring engineering costs and prototype expenses as we expand our product portfolio. Sales and marketing.
Stock Repurchase Programs In October 2021, our board of directors authorized a $1.0 billion stock repurchase program (the “Repurchase Program”). This authorization allows us to repurchase shares of our common stock funded from working capital and expires in the fourth quarter of 2024.
Stock Repurchase Programs From time to time, we repurchase shares of our common stock pursuant to the Repurchase Programs that are funded from working capital. In April 2024, we completed repurchases under our previous $1.0 billion stock repurchase program (“Prior Repurchase Program”).
Cash Flows from Investing Activities Our investing activities consist of our marketable securities investments, business combinations, investments in privately-held companies, and capital expenditures.
Cash Flows from Investing Activities Our investing activities primarily consist of our marketable securities investments, business combinations, and capital expenditures. During the year ended December 31, 2024, cash used in investing activities was $2.5 billion, consisting of purchases of available-for-sale securities of $4.5 billion, partially offset by proceeds of $2.1 billion from maturities and sales of marketable securities.
In addition, we had unrealized gains of $27.5 million in the year ended December 31, 2022 related to our equity investments. 60 Provision for Income Taxes (in thousands, except percentages) Year Ended December 31, 2022 2021 Change in $ % of Revenue $ % of Revenue $ % Provision for income taxes $ 229,350 5.2 % $ 90,025 3.1 % $ 139,325 154.8 % Effective tax rate 14.5 % 9.7 % Our provision for income taxes and effective tax rate increased in 2022 as compared to 2021.
Year Ended December 31, 2024 2023 Change in $ % of Revenue $ % of Revenue $ % Provision for income taxes $ 412,980 5.9 % $ 334,705 5.7 % $ 78,275 23.4 % Effective tax rate 12.6 % 13.8 % Our provision for income taxes increased for the year ended December 31, 2024, as compared to 2023, while our effective tax rate decreased for the year ended December 31, 2024, as compared to 2023.