Basis of Presentation and Summary of Significant Accounting Policies	6 Months Ended
Jun. 30, 2026
Accounting Policies [Abstract]
Basis of Presentation and Summary of Significant Accounting Policies	Basis of Presentation and Summary of Significant Accounting Policies Unaudited Interim Condensed Consolidated Financial Information The unaudited condensed consolidated financial statements include the accounts of Datadog, Inc. and its wholly-owned subsidiaries, and have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and following the requirements of the SEC for interim reporting. As permitted under those rules, certain footnotes or other financial information that are normally required by GAAP can be condensed or omitted. These financial statements have been prepared on the same basis as the Company’s annual financial statements and, in the opinion of management, reflect all adjustments, consisting only of normal recurring adjustments, which are necessary for the fair statement of the Company’s financial information. These interim results are not necessarily indicative of the results to be expected for the fiscal year ending December 31, 2026 or for any other interim period or for any other future year. The accompanying unaudited condensed consolidated financial statements and related financial information should be read in conjunction with the audited consolidated financial statements and the related notes contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, as filed with the SEC on February 18, 2026 (the “Annual Report”). Basis of Presentation The accompanying condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America ("GAAP"). Principles of Consolidation The condensed consolidated financial statements include the accounts of Datadog, Inc. and its wholly-owned subsidiaries. All intercompany transactions and balances have been eliminated in consolidation. Use of Estimates The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Such estimates include the fair value of marketable securities, the allowance for credit losses, the fair value of acquired assets and assumed liabilities from business combinations, useful lives of property, equipment, software and finite lived intangibles, stock-based compensation, valuation of long-lived assets and their recoverability, including goodwill, the incremental borrowing rate for operating leases, estimated expected period of benefit for deferred contract costs, fair value of the liability component of the convertible debt, realization of deferred tax assets and uncertain tax positions, revenue recognition and the allocation of overhead costs between cost of revenue and operating expenses. The Company bases its estimates on historical experience and also on assumptions that management considers reasonable. The Company assesses these estimates on a regular basis; however, actual results could materially differ from these estimates. Derivative Financial Instruments The Company utilizes foreign currency forward contracts to reduce the volatility in cash flows associated with forecasted operating expenses denominated in currencies other than the U.S. dollar. These foreign currency forward contracts are designated as cash flow hedges. The Company does not enter into derivative instruments for trading or speculative purposes. Changes in the fair value of these instruments are recorded in accumulated other comprehensive income (loss) and are subsequently reclassified into earnings in the same period in which the underlying hedged transactions affect earnings, generally within operating expenses. In the event the underlying forecasted transactions do not occur, or it becomes probable that they will not occur within the designated hedge period, the related gains or losses are reclassified into earnings. The Company formally designates and documents hedging relationships at inception and assesses hedge effectiveness at inception and on a quarterly basis thereafter. Cash flows at settlement of such foreign currency forward contracts are classified in the same category as the cash flows from the underlying hedged forecasted transactions. Accounting Pronouncements Recently Adopted In July 2025, the FASB issued ASU No. 2025-05, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets ("ASU No. 2025-05"), which provides a practical expedient related to the estimation of expected credit losses for current accounts receivable and current contract assets that arise from transactions accounted for under ASC 606. The practical expedient permits an entity to assume that current conditions as of the balance sheet date do not change for the remaining life of the asset. This guidance is effective for annual periods, including interim reporting periods, beginning after December 15, 2025, on a prospective basis, with early adoption permitted. The Company adopted this standard on a prospective basis for interim and annual periods beginning January 1, 2026. The adoption of this guidance did not have a material impact on the consolidated financial statements. Accounting Pronouncements Not Yet Adopted In November 2024, the FASB issued ASU No. 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40) ("ASU No. 2024-03"), which requires disaggregated disclosure of income statement expenses for public business entities. The ASU does not change the expense captions an entity presents on the face of the income statement; rather, it requires disaggregation of certain expense captions into specified categories in disclosures within the footnotes to the financial statements. For public business entities, it is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The amendments in this ASU should be applied prospectively, however, public business entities are permitted to apply the amendments in the ASU retrospectively. The Company is currently evaluating the impact of the adoption of this standard on its consolidated financial statements. In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software ("ASU No. 2025-06"), to modernize the accounting for software costs that are accounted for under Subtopic 350-40. The ASU removes all references to software development stages and allows software development costs to be capitalized once management commits to funding the project and it is probable that the project will be completed and used as intended. The ASU also introduces the concept of "significant development uncertainty," which, if present, prevents capitalization. The guidance is effective for annual reporting periods, including interim reporting periods, beginning after December 15, 2027. The guidance may be applied prospectively, retrospectively, or via a modified prospective transition method. The Company is currently evaluating the impact of the adoption of this standard on its consolidated financial statements. In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topics 270): Narrow-Scope Improvements ("ASU No. 2025-11"), which amends guidance related to interim financial reporting. The guidance is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of the adoption of this standard on its consolidated financial statements. In May 2026, the FASB issued ASU 2026-02, Environmental Credits and Environmental Credit Obligations (Topic 818) ("ASU No. 2026-02"), to establish accounting guidance for environmental credits and environmental credit obligations, including their recognition, measurement, presentation, and disclosure. The guidance is effective for annual reporting periods, including interim reporting periods, beginning after December 15, 2027, with early adoption permitted. The guidance should be applied on a retrospective basis through a cumulative-effect adjustment to the opening balance of retained earnings as of the beginning of the annual reporting period of adoption. The Company is currently evaluating the impact of the adoption of this standard on its consolidated financial statements.

The unaudited condensed consolidated financial statements include the accounts of Datadog, Inc. and its wholly-owned subsidiaries, and have been prepared in accordance with generally accepted accounting principles in the United States (“GAAP”) and following the requirements of the SEC for interim reporting. As permitted under those rules, certain footnotes or other financial information that are normally required by GAAP can be condensed or omitted. These financial statements have been prepared on the same basis as the Company’s annual financial statements and, in the opinion of management, reflect all adjustments, consisting only of normal recurring adjustments, which are necessary for the fair statement of the Company’s financial information. These interim results are not necessarily indicative of the results to be expected for the fiscal year ending December 31, 2026 or for any other interim period or for any other future year. The accompanying unaudited condensed consolidated financial statements and related financial information should be read in conjunction with the audited consolidated financial statements and the related notes contained in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, as filed with the SEC on February 18, 2026 (the “Annual Report”).

The preparation of condensed consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the condensed consolidated financial statements and accompanying notes. Such estimates include the fair value of marketable securities, the allowance for credit losses, the fair value of acquired assets and assumed liabilities from business combinations, useful lives of property, equipment, software and finite lived intangibles, stock-based compensation, valuation of long-lived assets and their recoverability, including goodwill, the incremental borrowing rate for operating leases, estimated expected period of benefit for deferred contract costs, fair value of the liability component of the convertible debt, realization of deferred tax assets and uncertain tax positions, revenue recognition and the allocation of overhead costs between cost of revenue and operating expenses. The Company bases its estimates on historical experience and also on assumptions that management considers reasonable. The Company assesses these estimates on a regular basis; however, actual results could materially differ from these estimates.

The Company utilizes foreign currency forward contracts to reduce the volatility in cash flows associated with forecasted operating expenses denominated in currencies other than the U.S. dollar. These foreign currency forward contracts are designated as cash flow hedges. The Company does not enter into derivative instruments for trading or speculative purposes. Changes in the fair value of these instruments are recorded in accumulated other comprehensive income (loss) and are subsequently reclassified into earnings in the same period in which the underlying hedged transactions affect earnings, generally within operating expenses. In the event the underlying forecasted transactions do not occur, or it becomes probable that they will not occur within the designated hedge period, the related gains or losses are reclassified into earnings. The Company formally designates and documents hedging relationships at inception and assesses hedge effectiveness at inception and on a quarterly basis thereafter. Cash flows at settlement of such foreign currency forward contracts are classified in the same category as the cash flows from the underlying hedged forecasted transactions.

In July 2025, the FASB issued ASU No. 2025-05, Financial Instruments-Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets ("ASU No. 2025-05"), which provides a practical expedient related to the estimation of expected credit losses for current accounts receivable and current contract assets that arise from transactions accounted for under ASC 606. The practical expedient permits an entity to assume that current conditions as of the balance sheet date do not change for the remaining life of the asset. This guidance is effective for annual periods, including interim reporting periods, beginning after December 15, 2025, on a prospective basis, with early adoption permitted. The Company adopted this standard on a prospective basis for interim and annual periods beginning January 1, 2026. The adoption of this guidance did not have a material impact on the consolidated financial statements.

In November 2024, the FASB issued ASU No. 2024-03, Income Statement-Reporting Comprehensive Income-Expense Disaggregation Disclosures (Subtopic 220-40) ("ASU No. 2024-03"), which requires disaggregated disclosure of income statement expenses for public business entities. The ASU does not change the expense captions an entity presents on the face of the income statement; rather, it requires disaggregation of certain expense captions into specified categories in disclosures within the footnotes to the financial statements. For public business entities, it is effective for fiscal years beginning after December 15, 2026, and interim periods within fiscal years beginning after December 15, 2027, with early adoption permitted. The amendments in this ASU should be applied prospectively, however, public business entities are permitted to apply the amendments in the ASU retrospectively. The Company is currently evaluating the impact of the adoption of this standard on its consolidated financial statements.

In September 2025, the FASB issued ASU 2025-06, Intangibles—Goodwill and Other—Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software ("ASU No. 2025-06"), to modernize the accounting for software costs that are accounted for under Subtopic 350-40. The ASU removes all references to software development stages and allows software development costs to be capitalized once management commits to funding the project and it is probable that the project will be completed and used as intended. The ASU also introduces the concept of "significant development uncertainty," which, if present, prevents capitalization. The guidance is effective for annual reporting periods, including interim reporting periods, beginning after December 15, 2027. The guidance may be applied prospectively, retrospectively, or via a modified prospective transition method. The Company is currently evaluating the impact of the adoption of this standard on its consolidated financial statements.

In December 2025, the FASB issued ASU 2025-11, Interim Reporting (Topics 270): Narrow-Scope Improvements ("ASU No. 2025-11"), which amends guidance related to interim financial reporting. The guidance is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027, with early adoption permitted. The Company is currently evaluating the impact of the adoption of this standard on its consolidated financial statements.

In May 2026, the FASB issued ASU 2026-02, Environmental Credits and Environmental Credit Obligations (Topic 818) ("ASU No. 2026-02"), to establish accounting guidance for environmental credits and environmental credit obligations, including their recognition, measurement, presentation, and disclosure. The guidance is effective for annual reporting periods, including interim reporting periods, beginning after December 15, 2027, with early adoption permitted. The guidance should be applied on a retrospective basis through a cumulative-effect adjustment to the opening balance of retained earnings as of the beginning of the annual reporting period of adoption. The Company is currently evaluating the impact of the adoption of this standard on its consolidated financial statements.