What is API Integration?
API - application programming interface which allows you to create, edit and manage data through your application .....
How to apply?

According to statistics, 90% of companies use from 5 to 25 different information systems for their activities
Many of the processes require the transfer of information from one application to another
If your systems are not interconnected by API, then data between systems is not transferred at all, or your employee spends time on transferring information manually for money