Conceptual model

The concept is very simple:

1. You supply the customers and the product plans of your business.
2. You subscribe your customers to a plan.
3. Upodi charges according to your product plan and creates the invoices.

Upodi definition of a subscription:

A subscription inherits the terms form the product plan and all the charges (products) available to the subscriber. A product plan can contain numerous of different charges with different pricing models and billing cycles, where a subscriber might only buy some of the charges available.