Why Enterprise Application Integration Platforms Have Traditionally Used Connectors
A connector (often called an SDK) is a piece of code that wraps an external API so that it can communicate with your application. Huh? Ok, well, let’s run through a practical example.
Say you wanted to update a contact in your CRM system every time there was a change to the same contact in your ERP (or accounting system). The providers of both the CRM and ERP system document their APIs on their websites. This documentation describes all of the operations available in the API, the method by which you should connect to the API, security, and other settings.