Explore the process of developing a gRPC API from scratch and learn how to leverage Postman for testing in this 28-minute conference talk by W. Ian Douglas from Postman. Discover how Postman, traditionally known for RESTful API testing, now supports gRPC as of early 2022. Follow along as the speaker demonstrates building a proto file and planning message formats for endpoints to interact with a funny jokes API. Gain insights into Postman's autogeneration features that enhance productivity and examine testing techniques to ensure API adherence to specifications. Unlock the potential of gRPC development and testing using Postman's powerful toolset.