> This paper describes the goals and priorities which the authors believe make C++ an especially effective programming language for our use cases. That said, our experience, use cases, and needs are clearly not those of every user. We aren’t pushing to directly build consensus on these points. Rather, this is presented as a vehicle to advertise our needs from C++ as a high-performance systems language.

The authors are (mostly) at Google. They build their binaries from scratch from a monolithic source repo with a reproducible build system every time they want to deploy software. Their use case is unusual and they recognize that. The document lays out their justification for what they prioritize and why, for example, they would happily sacrifice backwards compatibility or nonstandard architecture support for more performance.