In 2025, APIs continue to evolve, with gRPC and REST being two dominant architectures. Understanding their differences is crucial for modern software development. If you’re at all familiar with APIs, you know that REST APIs are the main API used, particularly when it comes to microservices and their applications. gRPC is a high-performance, binary, and strongly-typed protocol using HTTP/2, while REST is a simpler, text-based, and stateless protocol using HTTP with JSON/XML.