>Spanner depends on TrueTime, a powerful way of coordinating resources in disparate places. No one but Google has this technology, although AWS and Microsoft co

>Spanner depends on TrueTime, a powerful way of coordinating resources in disparate places. No one but Google has this technology, although AWS and Microsoft could conceivably build it. Pretty much no one else on Earth could. This is what I thought when the Spanner paper first came out. As I've worked in industry, I've discovered that far more companies than you think have access to the hardware necessary to support such behavior. If the interest continues, I'd expect this hardware to become fairly standard on enterprise gear. Kubernetes is also developed with the goal of preventing vendor lock-in... It is an on-ramp for "the cloud" in general, but there are many details that will decide where you run your cluster.