Description of Business and Summary of Significant Accounting Policies | Description of Business and Summary of Significant Accounting Policies Description of Business We were founded as Over the Edge Entertainment in Denmark in 2004. We reorganized as a Delaware corporation on May 28, 2009 as Unity Software Inc. (collectively referred to with its wholly owned subsidiaries as “we,” “our” or “us”). We provide a comprehensive set of software solutions to create, run and monetize interactive, real-time 2D and 3D content for mobile phones, tablets, PCs, consoles, and augmented and virtual reality devices, among others. We are headquartered in San Francisco, California and have operations in the United States, Denmark, Belgium, Canada, China, Colombia, Finland, France, Germany, Ireland, Israel, Japan, Lithuania, Portugal, Singapore, South Korea, Spain, Sweden, Switzerland, and the U.K. We market our solutions directly through our online store and field sales operations in North America, Denmark, China, Finland, the U.K., Germany, Israel, Japan, Singapore, South Korea, and Spain, and indirectly through independent distributors and resellers worldwide. Basis of Presentation and Consolidation We prepared the accompanying consolidated financial statements in accordance with U.S. generally accepted accounting principles ("GAAP"). The consolidated financial statements include the accounts of Unity Software Inc. and its wholly owned subsidiaries. We have eliminated all intercompany balances and transactions. In our opinion, the information contained herein reflects all adjustments necessary for a fair presentation of our results of operations, financial position, cash flows, and stockholders’ equity. All such adjustments are of a normal, recurring nature. Use of Estimates The preparation of consolidated financial statements in conformity with GAAP requires management to make certain estimates, judgments, and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements, as well as the reported amounts of revenue and expenses during the reporting period. For us, these estimates include, but are not limited to, revenue recognition, allowances for doubtful accounts, fair values of financial instruments, useful lives of fixed assets, the incremental borrowing rate ("IBR") we use to determine our operating lease liabilities, income taxes, valuation of deferred tax assets and liabilities, valuation of intangible assets, useful lives of intangible assets, assets acquired and liabilities assumed through business combinations, valuation of stock-based compensation, capitalization of software costs and software implementation costs, customer life for capitalized commissions, and other contingencies, among others. Actual results could differ from those estimates, and such differences could be material to our financial position and results of operations. Revenue Recognition Revenue is recognized upon the transfer of control of promised products and services to customers in an amount that reflects the consideration we expect to receive in exchange for those products or services. We evaluate and recognize revenue by: • identifying the contract(s) with the customer; • identifying the performance obligation(s) in the contract(s); • determining the transaction price; • allocating the transaction price to performance obligation(s) in the contract(s); and • recognizing revenue as each performance obligation is satisfied through the transfer of a promised good or service to a customer (“transfer of control”). The five-step model requires us to make significant estimates in situations where we are unable to establish stand-alone selling price based on various observable prices using all information that is reasonably available. Observable inputs and information we use to make these estimates include historical internal pricing data and cost plus margin analysis. We generate revenue through three sources: (1) Create Solutions, which consists primarily of our subscription offerings and professional services; (2) Operate Solutions, which includes our monetization services, hosting, and multiplayer services, and voice services; and (3) Strategic Partnerships and Other, which are primarily arrangements with strategic hardware, operating system, device, game console, and other technology providers for the customization and development of our software to enable interoperability with these platforms. We recognize revenue as our contractual performance obligations are satisfied. When contracts with our customers contain multiple performance obligations, we allocate the overall transaction price, which is the amount of consideration to which we expect to receive in exchange for promised goods or services, to each of the distinct performance obligations based on their estimated relative standalone selling prices. Create Solutions Create Solutions Subscriptions Our subscriptions, mainly consisting of Unity Pro and Unity Plus (collectively, the “Create Solutions subscriptions”) are fully integrated content development solutions that enable customers to build interactive real-time 2D and 3D applications. These Create Solutions subscriptions provide customers with the rights to a software license with embedded cloud functionality and multi-platform support. Significant judgment is required to determine the level of integration and interdependency between individual promises of the Create Solutions subscriptions. This determination influences whether the software is considered distinct and accounted for separately as a license performance obligation recognized at a point in time, or not distinct and accounted for together with other promises in the Create Solutions subscriptions as a single performance obligation recognized over time. Under FASB ASC Topic 606, Revenue from Contracts with Customers (“Topic 606”) , we have concluded that the software license is not distinct from the multi-platform support as they are highly interdependent and interrelated considering the significant two-way dependency between the promises. Although the promise to the embedded cloud functionality represents separate performance obligations under Topic 606, we have accounted for these obligations as if they are a single performance obligation that includes the software license and the multi-platform support because the cloud functionality has the same pattern of transfer to the customer over the duration of the subscription term. The transaction price is determined based on the consideration that we will be entitled to receive in exchange for transferring our Create Solutions subscriptions to the customer, and we do not have material variable consideration. We recognize the single performance obligation ratably over the contract term beginning when the license key is delivered. Enterprise customers may purchase an enhanced support offering (“Enterprise Support”) that is sold separately from the Create Solutions subscriptions, and is capable of being distinct, and is distinct within the context of the contract due to its separate utility. Enterprise Support is generally billed in advance and is recognized ratably over the support term as we have a stand-ready performance obligation over the support term. When an arrangement includes Enterprise Support and Create Solutions subscriptions, which have the same pattern of transfer to the customer (the services transfer to the customer over the same period), we account for those performance obligations as if they are a single performance obligation. If an arrangement includes Enterprise Support and Create Solutions subscriptions that do not have the same pattern of transfer, we allocate the transaction price to the distinct performance obligations and recognize them ratably over their respective terms. Create Solutions subscriptions typically have a term of one to three years and are generally billed in advance and recognized ratably over the term. Professional Services Our professional services revenue is primarily composed of consulting, integration, training, and custom application and workflow development. Professional services may be billed in advance or on a time and materials basis and we recognize the related revenue as services are rendered. We typically invoice our customers up front or when promised services are delivered, and the payment terms vary by customer type and location. The term between billing and payment due dates is not significant. As a result, we have determined that our contracts do not include significant financing component. Customer billings related to taxes imposed by and remitted to governmental authorities on revenue-producing transactions are reported on a net basis. Operate Solutions Monetization We generate advertising revenue through our monetization solutions, including the Unified Auction, which allows publishers to sell the available advertising inventory from their mobile applications to advertisers. We enter into contracts with both advertisers and publishers to participate in the Unified Auction. For advertisements placed through the Unified Auction, we evaluate whether we are the principal (in which case revenue is reported on a gross basis) or the agent (in which case revenue is reported on a net basis). The evaluation to present revenue on a gross basis versus net basis requires significant judgment. We have concluded that the publisher is our customer and we are the agent in facilitating the fulfillment of the advertising inventory in the Unified Auction primarily because we do not control the advertising inventory prior to the placement of an advertisement. As the operator of the Unified Auction, our role is to enable the publisher to monetize its advertising inventory with the advertiser based on the bid/ask price from the auction. We do not control the outcome of the bids and do not have pricing latitude in the transaction. Based on these and other factors, we report advertising revenue based on the net amount retained from the transaction which is our revenue share. Advertising revenue is recognized at a point in time when control is transferred to the customer. This occurs when a user installs an application after seeing an advertisement contracted on a cost-per-install basis or when an advertisement starts on a cost-per-impression basis. Typically, we do not retain a share of the revenue generated through Unity IAP (“In-App Purchases”). Publisher payables represent amounts earned by publishers in the Unified Auction and are presented as a reduction of revenue in our consolidated statements of operations. Payment terms are contractually defined and vary by publisher and location. Cloud and Hosting Services We provide cloud-based services as well as enterprise hosting (“Hosting Services”) to developers that develop and operate multiuser/multiplayer games and applications through a combination of hardware server and cloud-based infrastructure and services. The Hosting Services facilitate the connection of end users, and allow content game and application operators to monitor network traffic. Our cloud-based services provide our customers with tools and services to develop and operate live games and applications, including voice chat services. We primarily sell these services on a fixed fee or consumption-based model with fixed fees billed monthly in advance and consumption fees billed monthly in arrears. We recognize revenue ratably over the contractual service term for fixed fee arrangements as we have a stand-ready performance obligation that is generally fulfilled evenly throughout the hosting period. We recognize revenue for consumption-based arrangements as services are provided. Strategic Partnerships and Other We enter into strategic contracts with owners of hardware, operating system, device, game console and other technology providers to customize our software licenses to enable interoperability with these platforms (“Strategic Partnerships”). This allows customers using our Create Solutions subscriptions to build and publish content to more than one platform without having to write platform-specific code. We consider these strategic partners as our customers and generally provide them with the following promises in our contracts: (i) development and customization of our software to integrate with the customer’s platform and (ii) post-integration ongoing support and updates. We generally view these promises as one single performance obligation as they are not distinct within the context of the contract. This is because the customized software license that is integrated with the customer’s platform requires continuous updates that are critical to the utility of the customized software. The transaction price is determined based on the consideration that we will be entitled to receive in exchange for transferring our goods and services to the customer. We do not have material variable consideration. When Strategic Partnerships contain non-monetary consideration, we measure and record the transaction price at the estimated fair value of the non-cash consideration received from the customer. Typically, we recognize revenue for these contracts over time as service is performed using the input method to measure progress of the satisfaction of the performance obligation. Certain Strategic Partnerships also require the customer to pay sales-based royalties based on the sales of games on the Strategic Partner platform that incorporate our customized software. Since customized software intellectual property is the predominant item to which royalty relates, we recognize revenue for sales-based royalties when the later of the subsequent sale or usage occurs, or the performance to which some or all of the sales-based royalty has been allocated has been satisfied. We record revenue under these arrangements for the amounts due to us based on estimates of the sales of these customers and pursuant to the terms of the contracts. The Strategic Partnerships are typically multi-year arrangements where customers make payments commensurate with milestones accomplished with respect to the development and integration service or pay in advance on a quarterly basis. Cost of Revenue Cost of revenue for the delivery of software tools, support, updates and advertising consists primarily of hosting expenses, personnel costs (including salaries, stock-based compensation, and benefits) for employees associated with our product support and professional services organizations, credit card fees, third-party license fees, and allocated shared costs, including facilities, IT, and security costs, as well as amortization of related capitalized software costs and depreciation of related property and equipment. Stock-Based Compensation Stock-based compensation expense related to our employees and non-employee directors is calculated based on the fair value on the grant date. For restricted stock units ("RSUs"), fair value is based on the closing price of our common stock on the grant date. The fair value of stock options and purchases made under the 2020 Employee Stock Purchase Plan ("2020 ESPP") is estimated using the Black-Scholes pricing model. This model requires certain assumptions be used as inputs, such as the fair value of the underlying common stock, expected term of the option before exercise, expected volatility of our common stock, expected dividend yield, and a risk-free interest rate. Options granted during the year have a maximum contractual term of ten years. We have limited historical stock option activity and therefore estimates the expected term of stock options granted using the simplified method, which represents the average of the contractual term of the stock option and its weighted-average vesting period. The expected volatility of stock options is based upon the historical volatility of a number of publicly traded companies in similar industry. We have historically not declared or paid any dividends and does not currently expect to do so in the foreseeable future. The risk-free interest rates used are based on the U.S. Department of Treasury ("U.S. Treasury") yield in effect at the time of grant for zero-coupon U.S. Treasury notes with maturities approximately equal to the expected term of the stock options. We recognize stock-based compensation expense for stock options and RSUs, on a straight-line basis, over the requisite service period, generally, a vesting period of one year to four years. We recognize stock-based compensation expense related to the 2020 ESPP on a straight-line basis over the offering period. We have elected to account for forfeitures as they occur. Cash, Cash Equivalents, and Restricted Cash We consider all highly liquid investments with original maturities of three months or less at date of purchase to be cash equivalents. Our cash equivalents include money market funds and commercial paper. As of December 31, 2021 and 2020, restricted cash was $10.8 million and $21.4 million, respectively. Restricted cash consists of secured letters of credit issued in connection with our operating leases. Restrictions typically lapse at the end of the lease term, and restricted cash is classified as current or non-current based on the remaining term of the restriction. Marketable Securities Our marketable securities consist of investments in U.S. treasury securities, asset-backed securities, corporate bonds, commercial paper, and supranational bonds. We classify our investments in debt securities as available-for-sale at the time of purchase. We consider all debt securities as available for use in current operations, including those with maturity dates beyond one year, and therefore classify these securities as current assets in the consolidated balance sheets. Unrealized gains and losses, net of taxes, are included in accumulated other comprehensive loss, which is reflected as a separate component of stockholders’ equity in our consolidated balance sheets. These investments are considered impaired when a decline in fair value is judged to be other-than-temporary. We consider available quantitative and qualitative evidence in evaluating potential impairment of our investments on a quarterly basis. If the cost of an individual investment exceeds its fair value, we evaluate, among other factors, general market conditions, the duration and extent to which the fair value is less than cost, and our intent and ability to hold the investment. Once a decline in fair value is determined to be other-than-temporary, an impairment charge is recorded and a new cost basis in the investment is established. Accounts Receivable We record accounts receivable at the invoiced amount. We maintain an allowance for doubtful accounts for any receivables we may be unable to collect, based on historical loss patterns, the number of days that billings are past due, and an evaluation of the potential risk of loss associated with delinquent accounts. In addition, we review the accounts receivable amounts due from customers that are past due to identify specific customers with known disputes or collectability issues. In determining the amount of the reserve, we make judgments about the creditworthiness of customers based on ongoing credit evaluations. Account balances are charged off against the allowance after all means of collection have been exhausted and the potential for recovery is considered remote. As of December 31, 2021 and 2020, the allowance for doubtful accounts was $5.4 million and $2.7 million, respectively. We include the allowances for doubtful accounts in accounts receivable, net, on the consolidated balance sheets. Credit Risk and Concentrations Financial instruments that potentially subject us to a concentration of credit risk consist primarily of cash and cash equivalents, marketable securities, and accounts receivable. We place our domestic and foreign cash and cash equivalents, as well as our marketable securities, with large, creditworthy financial institutions. Balances in these accounts may exceed federally insured limits at times. In general, we do not require our customers to provide collateral or other security to support accounts receivable. To reduce credit risk, management performs credit evaluations of our customers’ financial condition, as warranted, and continually analyzes the allowance for doubtful accounts, which we maintain based upon the expected collectability of accounts receivable. As of December 31, 2021 and 2020, no individual customer represented 10% or more of the aggregate receivables. For the years ended December 31, 2021, 2020, and 2019, no individual customer represented 10% or more of total revenue. Fair Value of Financial Instruments We define fair value as the price that would be received from selling an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. When determining the fair value measurements for assets and liabilities which are required to be recorded at fair value, we consider the principal or most advantageous market in which to transact and the market-based risk. We apply fair value accounting for all financial assets and liabilities that are recognized or disclosed at fair value in the financial statements on a recurring basis. Goodwill, intangible assets, and other long-lived assets are measured at fair value on a nonrecurring basis, only if impairment is indicated. The carrying amounts reported in the consolidated financial statements approximate the fair value for cash and cash equivalents, accounts receivable, accounts payable, and accrued liabilities, due to their short-term nature. Comprehensive Loss Comprehensive loss is comprised of net loss and other comprehensive loss. Our other comprehensive loss includes unrealized gains and losses on available-for-sale investments and foreign currency translation adjustment. Property and Equipment, Net Property and equipment are stated at cost less accumulated depreciation and amortization, computed using the straight-line method based on the estimated useful lives of the assets. Depreciation commences upon placing the asset in service. An estimated useful life of three years is used for computer and other hardware and five years is used for furniture. Leasehold improvements are amortized over the shorter of the estimated useful life or the remaining term of the lease. Software is amortized over the estimated useful life or license term, generally either three The costs of repairs and maintenance are expensed when incurred, while expenditures for refurbishments and improvements that significantly add to the productive capacity or extend the useful life of an asset are capitalized. Upon retirement or sale, the cost of assets disposed of and the related accumulated depreciation are removed from the accounts, and any resulting gain or loss is credited or charged to the consolidated statement of operations. Leases We determine if a contract contains a lease based on whether we have the right to obtain substantially all of the economic benefits from the use of an identified asset and whether we have the right to direct the use of an identified asset in exchange for consideration, which relates to an asset which we do not own. Right-of-use ("ROU") assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. ROU assets are recognized as the lease liability, adjusted for lease incentives received and prepayments made. Lease liabilities are recognized at the present value of the future lease payments at the lease commencement date. The interest rate used to determine the present value of the future lease payments is our IBR because the interest rate implicit in most of our leases is not readily determinable. The IBR is a hypothetical rate based on our understanding of what our credit rating would be. Lease payments may be fixed or variable; however, only fixed payments or in-substance fixed payments are included in our lease liability calculation. Variable lease payments are recognized in operating expenses in the period in which the obligation for those payments are incurred. Convertible Senior Notes and Capped Call Transactions We account for the issuance of convertible senior notes as a single liability measured at its amortized cost. Interest expense related to the amortization of debt issuance costs are recorded in other income and expense. We record the cost of capped call transactions as a reduction of our additional paid-in capital on our consolidated balance sheets. Capped call transactions will not be remeasured as long as they continue to meet the conditions for equity classification. Business Combinations We allocate the fair value of purchase consideration to the tangible assets acquired, liabilities assumed, and intangible assets acquired based on their estimated fair values as of the acquisition date. The excess of the fair value of purchase consideration over the fair values of these identifiable assets and liabilities is recorded as goodwill. Accounting for business combinations requires us to make significant estimates and assumptions, especially with respect to intangible assets. Although we believe the assumptions and estimates we have made are reasonable, they are based in part on historical experience and information obtained from the management of the acquired companies and are inherently uncertain. Examples of critical estimates used in valuing certain of the intangible assets we have acquired or may acquire in the future include but are not limited to: • future expected revenues and cash flows from acquired intangible assets; • the economic life used on acquired company’s trade name, trademark, existing customer relationship, and contractual relationship, as well as assumptions about the period of time the acquired trade name and trademark will continue to be used in our product portfolio; • the expected use of the acquired intangible assets; and • discount rates. These estimates are inherently uncertain and unpredictable. Unanticipated events and circumstances may occur which may affect the accuracy or validity of such assumptions, estimates or actual results. Goodwill and Intangible Assets Goodwill represents the excess of the purchase price in a business combination over the fair value of net tangible and intangible assets acquired. Intangible assets, with the exception of certain contractual relationships, that are not considered to have an indefinite useful life are amortized on a straight-line basis over their estimated useful lives, which typically range from three On an annual basis, we evaluate the estimated remaining useful life of purchased intangible assets and whether events or changes in circumstances warrant a revision to the remaining amortization period. No changes to the useful lives of our intangible assets were deemed necessary during the years ended December 31, 2021, 2020, and 2019 based on management's evaluation. Segments We operate as a single operating segment. The chief operating decision maker is our Chief Executive Officer, who makes resource allocation decisions and assesses performance based on financial information presented on a consolidated basis, accompanied by disaggregated information of our revenue. Accordingly, we have determined that we have a single reportable segment and operating segment structure. Capitalized Software Costs and Software Implementation Costs We capitalize implementation costs incurred in our cloud computing service arrangements related to enterprise software solutions (“capitalized implementation costs”) and costs associated with customized internal‑use software systems that have reached the application development stage. Such capitalized costs include external direct costs utilized in developing or obtaining the applications and payroll and payroll‑related expenses for employees, who are directly associated with the development of the applications. We capitalize such costs during the application development stage, which begins when the preliminary project stage is complete and ceases at the point in which the project is substantially complete and is ready for its intended purpose. Costs related to preliminary project activities and post implementation activities are expensed as incurred. Capitalized software costs are amortized on a straight-line basis over their estimated useful life, which is generally two The amount of capitalized software costs and capitalized implementation costs was $1.2 million and $4.7 million, respectively, during the year ended December 31, 2021 and $0.8 million and $7.0 million, respectively, during the year ended December 31, 2020. Capitalized software costs are included in property and equipment, net, on the consolidated balance sheets. The current portion of capitalized implementation costs are included in prepaid expenses on the consolidated balance sheets, and the non-current portion of capitalized implementation costs are included in other assets on the consolidated balance sheets. Impairment Analysis We evaluate intangible assets and long-lived assets for possible impairment whenever events or changes in circumstances indicate that the carrying amount of such assets may not be recoverable. This includes but is not limited to significant adverse changes in business climate, market conditions, or other events that indicate an asset’s carrying amount may not be recoverable. Recoverability of these assets is measured by comparing the carrying amount of each asset to the future undiscounted cash flows the asset is expected to generate. If the undiscounted cash flows used in the test for recoverability are less than the carrying amount of these assets, the carrying amount of such assets is reduced to fair value. We evaluate and test the recoverability of our goodwill for impairment at least annually during our fourth quarter of each calendar year or more often if and when circumstances indicate that goodwill may not be recoverable. There were no material impairments of capitalized software costs, capitalized implementation costs, intangible assets, long-lived assets, or goodwill during the years ended December 31, 2021, 2020, and 2019. Income Taxes We are subject to income taxes in the United States and numerous foreign jurisdictions. Significant judgment is required in determining our provision for income taxes and income tax assets and liabilities, including evaluating uncertainties in the application of accounting principles and complex tax laws. We record an income tax expense (or benefit) for the anticipated tax consequences of the reported results of operations using the asset and liability method. Under this method, we recognize deferred income tax assets and liabilities for the expected future tax consequences of temporary differences between the financial reporting and tax bases of assets and liabilities, as well as for NOL and tax credit carryforwards. Deferred tax assets and liabilities are measured using the tax rates that are expected to apply to taxable income for the years in which those tax assets and liabilities are expected to be realized or settled. We recognize the deferred income tax effects of a change in tax rates in the period of the enactment. We record a valuation allowance to reduce our deferred tax assets to the net amount that we believe is more likely than not to be realized. We consider all available evidence, both positive and negative, including historical levels of income, expectations and risks associated with estimates of future taxable income, and ongoing tax planning strategies in assessing the need for a valuation allowance. We recognize tax benefits from uncertain tax positions only if we believe that the position is more likely than not to be sustained on examination by the taxing authorities based on the technical merits of the position. Although we believe that we have adequately reserved for our uncertain tax positions (including net interest and penalties), we can provide no assurance that the final tax outcome of these matters will not be materially different. We make adjustments to these reserves in accordance with the income tax accounting guidance when facts and circumstances change, such as the closing of a tax audit or the refinement of an estimate. To the extent that the final tax outcome of these matters is different from the amounts recorded, such differences will affect our income tax expense (or benefit) in the period in which such determination is made, and could have a |