JSON REST GraphQL gRPC Webhooks Protocol SOAP XML-RPC MQTT XMPP REST JSON-RPC Webhooks GraphQL CoAP ‍gRPC CORBA Distributed Component Object Model

 https://www.wallarm.com/what/api-security-tutorial

https://scalac.io/blog/grpc-vs-rest-vs-graphql/ 

https://stackshare.io/stackups/graphql-vs-grpc