Let's start with a brief presentation of the concept. Whether you realize it or not, you already know the technology, because we use it every day in our daily work, such as whenever we connect to mobile applications. The API makes it easy to synchronize applications in real time, the most common case being when we connect to a site using existing Gmail or Facebook accounts. What happens in the back is possible because of the API technology that extracts the information from those accounts and uses it to connect to the site we want to enter.
