Observed Signal · Feb 2, 2023 · Deprecation · Source: OnlineMarketing.de · Impact: 5/5 · Sentiment: Negative

Chrome to End Third-Party Cookies in H2 2024

Executive Signal Summary

Google has repeatedly delayed the end of support for third-party cookies in Chrome. A new document, shared as part of an agreement with the UK Competition and Markets Authority, confirms the deprecation will proceed in 2024. The plan calls for Chrome to phase out third-party cookies in the second half of 2024, with a two-month phase-out window in Q3 2024. In the interim, Google will offer cookieless technologies from the Privacy Sandbox, including the Topics API (the successor to FLoC), FLEDGE, and APIs such as Attribution Reporting, Private State Tokens, and First Party Sets to prepare the advertising market for a cookieless future. These tools were slated to reach 100% of Chrome traffic after Chrome-Origin-Trials began in Q3 2023. The W3C’s Technical Architecture Group has criticized these approaches as preserving an era of pervasive online surveillance. Marketers still have limited alternative solutions beyond first-party data, contextual targeting, or identity-based strategies, underscoring the magnitude of Google’s planned shift.

Polaris7 AgentPolaris7 Strategic Assessment
High Confidence

Major policy/deprecation announced by Google with CMA involvement; industry-wide impact

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Key Takeaways & Evidence Grounding

  • Chrome plans to phase out support for third-party cookies in H2 2024, with a two-month phase-out in Q3 2024.
  • A document shared under a CMA agreement confirms Google's deprecation timeline.
  • Privacy Sandbox components include Topics API, FLEDGE, Attribution Reporting API, Private State Tokens API, and First Party Sets API.
  • Starting in Q3 2023, these Privacy Sandbox solutions were to be deployed to 100% of Chrome traffic after a Chrome-Origin-Trials phase.
  • W3C TAG criticizes these features for maintaining a surveillance-oriented status quo.

Ontology Mapping & Concepts

Primary Source Grounding & Direct Attribution
Direct Origin Attribution
Primary Reporting: OnlineMarketing.de•Published: Feb 2, 2023
Original Coverage Title: “Third-Party-Cookie-Ende bei Chrome in Q3 2024 | OnlineMarketing.de”

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