We use a change management process. Pretty much a jira ticket that outlines the change that needs to happen. Affected systems need to have someone review the pl

We use a change management process. Pretty much a jira ticket that outlines the change that needs to happen. Affected systems need to have someone review the plan. It has a rollout and rollback process and instructions should be written in a way that anyone on the team could run it. Ideally, all steps are scripts that have been code reviewed and tested in a staging or dev environment. When it comes to DB migrations, the code is updated to work with the old and the new. The db migration happens and is ran by a script that is start/stoppable and has logs. The code is then updated to not need the old db stuffs.