What are 3 most common APIs?

The following are the most common types of web service APIs: SOAP (Simple Object Access Protocol): This is a protocol that uses XML as a format to transfer data.

There are four principal types of API commonly used in web-based applications: public, partner, private and composite .

7 Examples of APIs

API is the acronym for Application Programming Interface, which is a software intermediary that allows two applications to talk to each other . Each time you use an app like Facebook, send an instant message, or check the weather on your phone, you’re using an API.