DevOps and Team topologies are vital for delivering the fast flow of changes that today’s businesses need, they are insufficient. To prevent applications from becoming obstacles to rapid change, IT must also create architectures that support fast flow. In this workshop, I describe the architectural requirements that enable DevOps and Team Topologies to deliver a fast flow of changes. You will learn about the forces that shape an architecture and the trade-offs that you will need to make when designing an architecture. I show how to decide between the monolithic and microservice architectural styles. You will learn key monolithic architecture patterns for fast flow. I describe how to design a microservice architecture.