An Application program Interface is a clubbed system that specify how the components should interact. It comprises a set of routines, protocols, and tools for building software applications. This enables the exchange of data in between the applications. API helps to create amazing applications by providing all the building blocks.
API Integrations (REST/SOAP)
This is a messaging protocol that allows programs that run on operating systems like Linux and Windows) to communicate using HTTP and its XML. This API helps to specify how to encode an HTTP header and XML file to communicate between two programs. SOAP support other protocols also. SOAP are compatible with firewall servers which allows HTTP requests.
Advantages of SOAP API: