My understanding is GKE on GCP is kinda sorta a rewrite of the Borg system Google has used internally for years. Internal services at Google are encouraged to u

My understanding is GKE on GCP is kinda sorta a rewrite of the Borg system Google has used internally for years. Internal services at Google are encouraged to use GKE, but there's little incentive to migrate from the Borg infrastructure that has a long track record for reliability. So currently only a marginal amount of Google services use GKE, but as old services are retired and new ones developed, the share of services on GKE should grow steadily over time.