gRPC is an open source technology that makes it easier for developers to create high performance applications. It is based on the Remote Procedure Call (RPC) protocol and uses a modern communication protocol called Protocol Buffers to serialize and transfer data between different applications. With gRPC, developers can take advantage of efficient communication between services, with faster response times and lower latency. gRPC is also a great choice for microservices since it allows for efficient data streaming and supports multiple languages. It provides built-in authentication and security features that can be used to ensure secure communication between services. gRPC is becoming increasingly popular as more developers discover its many benefits and use it to build their applications. With its efficient communication, support for multiple languages and built-in security features, gRPC is an essential component of modern application development.