Introduction of short message API interface

Domestic mobile, China Unicom and telecom-level SMS will develop their own api interface programs, which is convenient for enterprises to call themselves when providing SMS service support for enterprises. 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 system integration, customization, program application and other operations. This interface standard is called open API.