Anecdotal evidence. I've also seen colleagues spend weeks arguing with AWS support while debugging a weird performance degradation issue, that would have been straight-forward to investigate in a bare metal deployment with full control over everything.
It's not like the cloud is a magical place where no unexpected issues ever happen. Cloud providers can be surprisingly buggy, especially AWS, particularly at scale when you start hitting the implicit scaling limits their docs conveniently forgot to mention.
It's not like the cloud is a magical place where no unexpected issues ever happen. Cloud providers can be surprisingly buggy, especially AWS, particularly at scale when you start hitting the implicit scaling limits their docs conveniently forgot to mention.
Each technology has their unique challenges.