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Learn more about RWS

5. Migrate to the relevant web APIs

CHIPS and RWS enable specific types of cross-site cookie access while retaining user privacy, however the
other use cases for third-party cookies must migrate to privacy-focused alternatives.

The Privacy Sandbox provides a range of purpose-built APIs for specific use cases without a need for third-
party cookies:

· Federated Credential Management (FedCM) enables federated identity services allowing users to
sign in to sites and services.

· Private State Tokens enable anti-fraud and anti-spam by exchanging limited, non-identifying infor-
mation across sites.

· Topics enables interest-based advertising and content personalization.

· Protected Audience enables remarketing and custom audiences.

· Attribution Reporting enables measurement of ad impressions and conversions.

Additionally, Chrome supports the Storage Access API (SAA) for usage in iframes with user interaction. SAA
is already supported across Edge, Firefox, and Safari. We believe it strikes a good balance to maintain user pri-
vacy while still enabling critical cross-site functionality with the benefit of cross-browser compatibility.

Note that the Storage Access API will surface a browser permission prompt to users. To provide an optimal user
experience, we will only prompt the user if the site calling requestStorageAccess() has interacted with the em-
bedded page and has previously visited the third-party site in a top-level context. A successful grant will allow
cross-site cookie access for that site for 30 days. Potential use cases are authenticated cross-site embeds such as
social network commenting widgets, payment providers, subscribed video services.

If you still have third-party cookie use cases that are not covered by these options, you should report the issue to
us and consider if there are alternative implementations that do not depend on functionality that can enable
cross-site tracking.

Enterprise support

Enterprise-managed Chrome always has unique requirements compared to general web usage and we will be
ensuring that enterprise administrators have appropriate controls over the deprecation of third-party cookies in
their browsers.

As with the majority of Chrome experiments, most enterprise end users will be excluded from the 1% third-
party cookie deprecation automatically. For the few that may be affected, enterprise administrators can set