its called "fuck it, we'll do it live"
it's really fast because you don't need a dev server and testing server and production server, you just push your code to the web ezpz. Short feedback loops enable fast iteration, and your failures happen fast and close to the source so you can know about them faster.
update: I was wrong. They've been doing this even longer.
the above post borders on violating the ACM Code of Ethics subsection "dunking on other computing professionals" but it seems all of the computing professionals have already left during The Exodus or are acting under duress.
Or someone accidentally pushed to prod because the safeguards don't exist anymore and then I feel worse about it, but it still shows an organizational failure more than a personal one