In addition to PBCs, you often hear the term microservices in discussions about composable commerce. Microservices are a developer concept and are often confused with PBCs. Let us untangle the two for you.
If a retailer wants to solve a particular business challenge by adding a best-of-breed business capability (PBC), then that composable commerce element will consist of several microservices. Each microservice is developed and designed for a specific purpose, communicating with other microservices over well-defined APIs. Together, the microservices form a coherent functionality to add business value within composable commerce.
So, in short, microservices are the building blocks of a PBC.