This is really orthogonal to SRE. Google, in many ways, prefers centralized infrastructure. They invest in a few ways of doing things and integrate them all tog

This is really orthogonal to SRE. Google, in many ways, prefers centralized infrastructure. They invest in a few ways of doing things and integrate them all together. Devs have a few tools/libraries/services etc. to pick from and they mostly work together very well. This makes SRE easier since devs can throw various applications over the wall and SRE only has to learn a few different pieces of infrastructure. But in practice, any pariticular SRE/dev team pair would work together for a long time and use a small set of infrastructure anyway even if it wasn't the same as the rest of the company. SREs just become a little less interchangeable since other teams will use different sets of infra.