API:-
An API is a set of rules and protocols that allows different software applications to communicate with each other.
REST API:-
A REST API (Representational State Transfer Application Programming Interface) is a type of API that follows the principles of REST architecture. REST is an architectural style for designing applications, focusing on the interaction between clients and servers over HTTP.
Rest Messages:-
Rest Messages basically stores details on how to interact with external web services through REST in a REST Message record.
APIs are essentially endpoints that, when accessed, provide data from any third-party application. However, REST Messages are required to establish a relationship and define the rules based on which you agree with a third party on how they will use your APIs, what type of users will access them, and what authentication mechanisms will be used, etc.
