Some parts of the Privacy Sandbox land on Edge Canary
This flag edge://flags/#use-first-party-set which was added today to Edge Version 89.0.749.0 (Official build) canary (64-bit) it's one of many privacy-related features for Privacy Sandbox, the goal of which is to ultimately get rid of 3rd party cookies. Use First-Party Sets First-Party Sets are sets of registrable domains (or origins). The browser uses these sets to allow websites that have multiple domains to treat their related domains as if they were first-party domains. This enables less restricted cross-domain communication across all the domains in a First-Party Set. – Mac, Windows, Linux Enable domains to belong to the same first party Goal: Enable entities to declare that related domain names are owned by the same first party. Many organizations own sites across multiple domains. This can become a problem if restrictions are imposed on tracking user identity across sites that are seen as 'third-party' but actually belong to the same organization. First Party Sets aims to make the web's concept of first and third parties more closely aligned with the real world's by enabling multiple domains to declare themselves as belonging to the same first party. more info: Digging into the Privacy Sandbox (web.dev) privacycg/first-party-sets (github.com)
