Verify before declaring success, and what a rollback does not undo
A script that fails instead of the service, a rollback in one command, and the database migration that rollback does not reverse.
22 minutesTechnical content last reviewed on 3 Aug 2026
This lesson is for signed-in learners
Create an account to subscribe and record your learning progress.
What this lesson builds
- Deploying a version you can switch back from
- Saying what an output proves, and what it leaves open