[throwaway787544]

We can now push 15 different apps to prod on the same server with completely different base distributions and dependencies, and they'll run the same as they did on a dev's laptop. The apps & servers don't crash as much as they used to when the app or packages would break on an update, and somebody had to juggle actual dependencies or run separate VMs or physical servers to run all those apps, and the configuration management that used to hose the box when it was misconfigured now no longer exists. The site is much more reliable now, and more dynamic, as it can be updated more frequently with random tech.

When was the last time you saw a weekly "Our website is down for maintenance for the next 2 days" message, other than for some government website still running COBOL on a mainframe? When was the last time you saw 500 errors? Used to be a daily thing.