> But when you have many similar repos (modules) with similar build steps you want to manage

How many teams do you have? In all seriousness, if you aren't talking at least one team per repo, have you considered a monorepo setup? Aren't you burning time managing those many similar repos with many similar build steps?

That said, even in a monorepo, I still prefer Jenkins compared to cleaner seeming cloud offerings due to its limitless flexibility.