I have not used Google Cloud, so cannot comment directly on that. In general all of the big-scale cloud providers will share some common issues and each will add their own individual issues into the mix. They do all (AFAIK) have some sort of free trial so you could spec out what you want, sign up with all for the trials and see how wonderful/horrendous they are. Try before you buy.

What I do have is multiple experiences of Google providing a paid-for service and then unceremoniously binning it. This history does not entice me to think about building a significant chunk of a business on one of their offerings which could similarly just disappear. Whoever you end up hosting with you should have an exit plan, just in case.

(marking this OT as it really is not specific to Perl any more)