Bounded Context Maps: Upstream vs Downstream and the Implications of Conformist vs ACL
Join Thomas Coopman to explore how to build bounded context maps
When connecting bounded contexts, the line between a clean integration and a tangled mess is thin. This webinar skips the basic Domain-Driven Design theory and dives straight into the practical realities of context mapping.
With two bounded contexts, we represent one as upstream and the other as downstream. Choosing which bounded context is upstream versus downstream is an important decision. This webinar explores that choice and how applying a Conformist or Anti-Corruption Layer impacts your architecture.
Through practical scenarios and code examples, we’ll explore what these patterns actually mean for your codebase, your API contracts, and your team's autonomy.
We’ll also look at the nuances of these patterns in practice—showing that these boundaries aren't strictly black and white, and why you might intentionally design a "partial" ACL.
What you will learn:
What being upstream or downstream actually means for your integrations.
The practical, day-to-day code implications of choosing a Conformist vs. Anti-Corruption Layer.
Code examples demonstrating how to map and protect these boundaries.
Why these patterns aren't binary—and how you can implement a hybrid or partial ACL when it makes sense.
Thomas Coopman is CEO and a senior consultant at Aardling. He works with clients across finance, supply chain, and automotive.