A high-performance universal RPC framework
gRPC is a modern RPC framework that can run in any environment. It can efficiently connect services in and across data centers with pluggable support for load balancing, tracing, health checking and authentication. It is also applicable in last mile of distributed computing to connect devices, mobile applications and browsers to backend services.
How Google uses gRPC
gRPC is being used for communication in internal production, on Google Cloud Platform, and in public-facing APIs.