Borg was good enough that google engineers didn’t have any desire to use GCP and thus most of the company was not dogfooding its own product. Additionally, the

Borg was good enough that google engineers didn’t have any desire to use GCP and thus most of the company was not dogfooding its own product. Additionally, the “two pizza teams” style of Amazon’s development was more amenable to the AWS model of development where each piece of Amazon could run effectively in AWS [1]. Google is structured differently, and it’s only recently that both AWS and GCP could even approach running the largest systems from a company like Google. [1] Yes I know that AWS wasn’t built specifically for Amazon engineers, but the fact that it could accommodate them over time has been a boon for their cloud, and it gives enterprises confidence that of AWS’s strategic importance and desire to make it world class. There isn’t a large hidden layer of services that Amazon has access to that the general public doesn’t.