The order manager is a microservice that processes the orders that the customer places through the UI. As you probably remember, we are not going to create a sophisticated single-page application with a modern visual framework, as it is out of the scope of this book, but we are going to provide the JSON interface in order to be able to build the front end later.
Order manager introduces an interesting problem: this microservice needs access to the information about products, such as name, price, availability, and so on. However, it is stored in the product manager microservice, so how do we do that?
Well, the answer for this question might look simple, but requires a bit of thinking.