What is API ?
David Hendon commented
One way to improve understanding is to define your terms, for example, API. Despite the comment below, I still do not understand what it is. Whether a definition is supplied in the body of information being provided by the FCC (Federal Communication Commission), a footnote or a hyperlink (a link to another site that provides a definition/description of what it is and allows a return to the original communication), some such means of clarification would be very helpful.
FUUCK OFF AND DIE
An API is a way of gathering data for developers to put in their own websites or apps.. Like how PayPal has an API for you to build their checkout services into your website. Or on a smartphone, this could be, for example, allowing an app to dial a phone number or send a text, that would require an API for that external application to allow them to use the data for that specific application.