Google Sign-In on Marketing Pages
Sign in from public marketing pages with Google One Tap, reuse the selected account as a login hint, and return to the app home when already signed in.
Public marketing HTML can show Google One Tap for guests. After an account is chosen, the email from the credential is passed as a login hint so the authorization step does not ask again. Signed-in users who hit the guest welcome page go to the catalog home instead. A Google Workspace sign-in also stores Drive and Calendar access, so those tools work without a second connect step.