High-performance Remote Procedure Call framework that can run in any environment. Like having a super-fast telephone system for applications to call functions on other computers.
Microservices use gRPC for efficient communication, reducing latency compared to traditional REST APIs.
gRPC is an open-source RPC framework, not a cloud-provider service. All major clouds support running gRPC workloads on their compute and Kubernetes platforms, and many managed API gateways/load balancers can proxy gRPC traffic.