From better-auth
Concepts map, step-by-step code diffs, data migration SQL, and rollback strategy.
From Clerk
Concepts map, hooks and middleware diff, Clerk data export SQL, rollout plan.
From the better-auth agent plugin
Concepts map, delegation chain shape, cascading revocation, authorizeByToken migration.
From Auth0
Concepts map, M2M-to-agent migration, rules-to-hooks, user export import, rollback plan.