So you have a custom module with custom classes and want to show that data on the live site?
If you've followed this example in the documentation:
and follow the "Generating class code" you'll get your own provider and info objects. Depending on your needs you can use this in any custom control, or use a default Kentico Generic Web Part viewer.
In case you mean showing 'ecommerce STORE data'? What data do you use in your module and what does your module do?
The default API's for ecom data should be available.
Check out the API examples in the documentation here: https://docs.kentico.com/api11/e-commerce