Hi,
What is the best way to integrate with other non-SAP systems through REST API (we consume their REST APIs)?
If other systems want to connect to SAP Commerce, we can use the OCC extension, but what if we want to consume other's systems' APIs?
Up until now, we're using custom implementation with RestTemplate of Spring.
I read about the integration API module, but it seems only used for oData and only able to connect to other SAP Commerce instance

So, again, the question is what is the best way to integrate into other non-SAP systems by consuming their REST API?
Is it to create our own custom integration extension, or does SAP already provide this?