I've read all the docs, and I still don't see anything about AWS doing the monetization. What am I missing? Has someone else found this missing link? Billing i

I've read all the docs, and I still don't see anything about AWS doing the monetization. What am I missing? Has someone else found this missing link? Billing is mentioned in two sentences: 1. "As I mentioned earlier, you can use Usage Plans to bill for usage and to create an ecosystem around your APIs." 2. "You can then process and analyze the data as desired. For example, you could bill your subscribers on a per-call basis." So I'm reading this as I am responsible for billing the customer.