A computer program’s functions, like the Bulk SMS service, can be made available to another computer program, such as the notification section of an online booking website, using an API (Application Programming Interface).With our SMS API code, you may send and receive SMS messages in just a few minutes. It comes with comprehensive documentation and complete developer codes. Our SMS API facilitates low-cost, relevant two-way consumer discussions, regardless of the length of the code.
For more info. :- https://www.msgclub.net/blog/what-is-an-sms-api/