Hands-on Session: A Glimpse of Domain-Driven Transformation

(This is a hands-on lab with limited capacity)

Transforming legacy systems with tangled, chaotic architectures into well-structured, maintainable solutions is no small feat. Many teams inherit systems often labeled as “Monoliths” or “Big Balls of Mud.” In this concise two-hour session, participants will get a high-level introduction to the principles and practices of Domain-Driven Transformation.

This workshop provides a quick overview of the key concepts, including how to evaluate your system’s current state and the critical first steps to take. Participants will explore the Modularity Maturity Index (MMI) as a guide to prioritize efforts, starting with understanding the domain. The session also highlights Collaborative Modeling methods as powerful tools for uncovering domain insights and transforming the system into a robust architecture.

Attendees will leave with a catalog of refactorings and actionable heuristics, providing a starting point for tackling challenges such as BBOM architecture and anemic domain models. Whether you’re curious about Domain-Driven Transformation or considering how to apply it in your projects, this session offers a practical glimpse into the possibilities.

Prerequisites

Participants will work in groups of approximately 6–8 people. Ideally, each group will require:

a) a cabaret style table b) a whiteboard or pinboard with brown paper attached c) markers and sticky notes d) printed code examples in A3 format, to be stuck with tape onto the walls

For the whole group, we will need: • a moderation kit • an additional whiteboard or pinboard for the presenter