Migration guide to API as a Product

Some customers are finding it difficult to know how exactly they should map their APIs in 3scale using the APIaaP architecture. Additionally it can be even more complex for customers with existing integrations and how they should migrate, best practices, how to make this transparent for the end user(s). There is currently no good example on any of these items which unfortunately means this very powerful feature is either not being leveraged to its full potential or worse, misused.