Multiple environments is an old practice. I would roughly correlate the growth of use of Git with the popularity of them, though. It’s easier for smaller/newer/

Multiple environments is an old practice. I would roughly correlate the growth of use of Git with the popularity of them, though. It’s easier for smaller/newer/more stretched companies to manage multiple environments when it’s easier to move code and assets to them. As for your current place: single environment won’t make them stop breaking things. Deploying much more often will. The staging environment, or gradual rollout in prod, doesn’t help if you have a lengthy manual QA process so you need to force deployments into a situation where there’s no time for slow and manual.