There is no one-size-fits-all answer to this question, as the best way to interface with an ecommerce platform like hybris will vary depending on the specific needs and requirements of your business. However, some tips on how to interface with hybris include understanding the platform's data model, leveraging the hybris Commerce Accelerator framework, and utilizing the hybris Integration Framework. You can find more detailed information on each of these topics in the hybris help documentation.