Magento Upgrade Compatibility Tool to make your life easier. 

Upgrade compatibility tool (UCT) is a great instrument to review your code.
Here I'm explaining its basics and also showing how we are using this tool in daily routine.
Official documentation:
experienceleag...
00:33 Upgrade compatibility tool intro
03:58 UCT in CI/CD processes
08:24 UCT in Merge Request Review Process
10:18 GQL Example
10:56 DB changes
11:14 Outro