APIs are needed to bring applications together in order to perform a designed function built around sharing data and executing pre-defined processes. They work as the middle man, allowing developers to build new programmatic interactions between the various applications people and businesses use on a daily basis.

Without app APIs, the mobile experience that we all know and rely on would be very different. APIs help mobile and web apps stay connected to the vital information that they need to deliver a high-quality User Experience. Let's explore APIs in more detail.