What does gRPC stand for?

The "g" in gRPC officially stands for different things in each release — it's a running joke in the gRPC project. In the first release, it stood for gRPC itself (recursive acronym). Subsequent releases have had the "g" mean: "good", "green", "glorious", etc. The "RPC" part always stands for Remote Procedure Call, the classic concept of executing a procedure (function) on a remote computer as if it were a local call. So while the "g" is playful, the core meaning is a Google-originated Remote Procedure Call framework. It was publicly released by Google in 2015 and became a CNCF graduated project in 2019.