How Should I Ship This Change?

Not “which deploy button”. The rollout shape is decided by four properties of the change itself: is it verified, is the artifact the one that was verified, can it coexist with the version it replaces, and what does it cost if it is wrong. Answer those in order and the strategy falls out.

Not "which deploy button". The rollout shape is determined by four properties of the change itself — is it verified, is the artifact the one that was verified, can it coexist with the version it replaces, and what does it cost if it is wrong. Answer those in order and the strategy falls out. Then observe against a baseline, because a rollout you are not watching is a rollout you cannot stop.

Did every required check pass on this exact commit — including the slow ones nobody watches?

Required Checks →

Then watch it

Deployment simulator →

What each strategy costs in capacity, and how much evidence it gives you before it is too late.

Readiness review →

Whether the service is in a state to be shipped to at all.