Built a live Auth0 demo with eight integration patterns side by side. The interesting part: a unified profile page that correlates Traditional, BFF, and SPA sessions via the session_id field on refresh tokens - showing which apps share an Auth0 AS session and which are isolated. Also covers MRRT exchange ledger, Fingerprint ad-blocker bypass, On-Behalf-Of delegation, and Custom Token Exchange. https://tobytes.com/articles/auth0-token-session-demo #Auth0 #OAuth #Identity