After release, a problem is discovered in the train ticketing application your team has built. How should the team proceed?

It’s important to make the fix systematically if at all possible. If you have an automated process for pushing changes, use that if you possibly can. In an emergency, it’s important for individuals to have discretion, but also to bear in mind that if your fix is making your overall delivery infrastructure less systematic, that’s technical debt you’ll need to pay off in your work on continuous delivery. See the “Release Stage” video to review.