The online billing space can be a bit complicated. This post hopes to explain how all the players work together and the advantages and disadvantages of adding and removing layers. What are the layers? There are 2–3 layers in the recurring billing space. The first layer is the software layer. Companies like Chargify, Chargebee, Zuora, and Recurly calculate when and how much to charge your customers. They take these amounts and send them to whatever gateway you have plugged int