Earlier quoted context omitted.
I tried to find it in this video, but failed. Could you please share a time stamp on where to look? It’s a pretty big deal if Gmail migrated to GCP-provided Spanner(not to an internal Spanner instance) and sounds like he kind of vote of confidence GCP and Cloud Spanner could benefit from: might I suggest to write about it? It’s easier to digest and harder to miss than an hour-long keynote video with no time stamps. A…
It's almost certainly not the case that Gmail uses Cloud Spanner rather than Internal Spanner. I don't think Cloud Spanner (or most of Google's cloud products) have the featureset required to support loads like Gmail (both in terms of technical capability, and security/privacy features). When I worked at Google I tried to get more services to migrate to the cloud but the internal environment that was built up over 25…
It doesn't make much sense to have a 'better' version of a product you sell but keep it internal.