What is the short message API interface?

Enterprise short message API interface: application program interface (API) API is a set of definitions, programs and protocols through which computer software can communicate with each other. One of the main functions of API is to provide a general function set. Programmers can avoid writing useless programs by using API functions to develop applications, thus reducing programming tasks. API is also a middleware, which provides data sharing for various platforms. Domestic mobile, China Unicom and telecom-grade Yimei SMS will develop their own api interface programs when providing SMS service support for enterprises, which is convenient for enterprises to call themselves. There are obvious differences between API and GUI or command interface: API interface belongs to operating system or program interface, while the latter two belong to direct user interface. Sometimes companies use API as their public open system. In other words, the company formulates its own system interface standard, and all members of the company can call the source code through this interface standard when they need to do system integration, customization and program application. This interface standard is called open API.