API stands for Application Programming Interface. It is a computing interface designed to define interactions between several software intermediaries. Such interactions include the type of calls or requests allowed, the acceptable methods of making such calls or requests, the data formats allowed, and other expected conventions. APIs may also offer extension mechanisms to allow users to extend existing functionality as necessary. There are 100% custom APIs, APIs designed to be specific to a component, and APIs designed in line with an industry-standard to guarantee interoperability. APIs enable modular programming via information hiding, which grants users access to the interface but without implementation.
API comes in handy when building applications by simplifying programming. It does this by abstracting the underlying implementation while granting access to only the actions or objects required by the developer. A graphical interface for an email client may offer users a single button to perform a series of steps, from fetching to highlighting new emails. However, an API for file input/output might provide a developer with a function that copies a file from a location to a new location, without bothering the developer with the need to understand the underlying file system operations.
We can describe an API as an intermediary between two applications, enabling one of these applications to pick up information from the other and send it to you. This software serves as a bridge, calling the other application, asking, and collecting data for you. DeBounce’s email validation API helps you with real-time verification of subscribers.