[GabeWeiss_]

Parts, yes. In reference to the specifics mentioned in here though, those services run on Infra Spanner, not Cloud Spanner, but they're the same stack. The main reason things like Gmail, Ads, etc haven't swapped into GCP is because of the internal tooling that's built up around the infra spanner relating to those services specific to Google that don't make sense in Cloud Spanner.

[QuercusMax]

It's way WAY more than just Infra Spanner vs Cloud Spanner. Cloud spanner doesn't support protobuf, which is annoying, but that's not a dealbreaker; it's still just a DB. The issue is really all the various internal frameworks (such as Apps Framework for Java), deployment systems (Server Platform, AKA Boq/Pod/Urfin), and so forth.

[GabeWeiss_]

Of course, I was simplifying. It's always more complicated doing a migration. :)

[QuercusMax]

Not just migrations are hard, either; Google Cloud has put (almost?) zero effort into making it easy to use Cloud from systems running on Borg.

My old team was building a system that was half-GCP and half-Borg, and we had to write our own (extremely bad) Cloud Spanner fake for use in tests. In contrast, Infra Spanner is extremely well supported for tests. Same with BigQuery vs Dremel and many other systems.

[bananapub]

this is maybe the most ill-informed post about google I've ever seen on this site, wow