My apologies, that came off a bit harsh.
> Was it specific services within GitHub that failed a lot?
Well, everything from its frontends, to the CI service, to the Git service itself. People weren't able to push, pull, deploy or review code for hours at a time. Just major disruptions all around, which happened regularly.
I do think this has improved slightly over the past few months, but you were lucky if you weren't affected much.