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## 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.