How create a connector for the exchange of data between the PIM and another publication management system

[WesleyApedoAmah]

Initially, I wanted to develop an app to facilitate the exchange of data between the PIM and another publication management system. However, I realized that creating a UI for the application would be necessary, which is something I want to avoid. So, I'm wondering if a connector would suffice for this task. If so, could you guide me on how to implement it? I'm having trouble understanding the documentation regarding the setup of connectors."