Hi there, any recommendation for metadata modeling? Should i start with integration sources ( data touch points ) and later try to group them into data products, or should i start with the data product first thinking ?

It is difficult to say without knowing your organization. My approach would be to start with how can you create the most value with using DataHub. It could be ingesting meta-data from different sources which would allow consumers to discover data available faster. It could be reaching out to existing product owners and investigating what data products they own. Even a meet in the middle is possible and that's what we're doing at my company at the moment.