Summary
Third-party cookies, used for embedded content and widgets, are now restricted to first-party access. Cross-site cookies must have the SameSite=None attribute. Audit your code for such cookies and remove unnecessary usage. Partitioned cookies will still function after third-party cookies are deprecated. Use tools like Chrome DevTools and the Privacy Sandbox Analysis Tool for cookie analysis. Check with third-party service providers about their plans for the cookie phaseout.