commercetools Composable Commerce is a set of independent, API-first services. Each service covers a specific business capability — products, carts, orders, customers, pricing, promotions, and more — and you interact with them through the HTTP API.
In this implementation guide, the storefront and checkout experience are provided by commercetools Frontend and Checkout. Connect is the deployment platform for integration connectors. You can use all four products together or adopt them independently.
Review the architecture overview for your target use case before you start implementation. The architecture diagrams show how the services interact and where to integrate external systems. They also clarify which components you own versus which commercetools manages.