Getting domain boundaries right is one of the most critical - and most difficult - challenges in software architecture. Done well, it leads to systems that are adaptable, maintainable, and aligned with business capabilities. Done poorly, it results in tightly coupled, unmanageable codebases.

Domain-Driven Design popularized the concept of Bounded Contexts as a key pattern for structuring complex systems. But are they really the solution - or just one tool among many?

This talk explores a range of approaches for discovering and refining domain boundaries, including domain modeling, Bounded Contexts, Event Storming, API design, and Test-Driven Development. Rather than promoting a single method, it presents practical heuristics and trade-offs drawn from real-world experience.

You’ll learn how to combine these techniques to design architectures that better reflect business realities—resulting in systems that are easier to evolve and more effective in delivering value.