Yes. However, with more and more teams, and more and more languages, this communication, and especially planning and executing these upgrades and changes while

Yes. However, with more and more teams, and more and more languages, this communication, and especially planning and executing these upgrades and changes while providing rollbacks for all languages becomes harder and harder. It's very possible to do this, but it takes a lot of effort. Containerization largely eliminates this need for communication. There are new problems - security of running containers, image sizes, building images safely and so on, but this problem disappears.