Domain-Driven Design (DDD) is a software development approach that places the core business domain (the problem area) and its logic at the heart of software design. It focuses on modeling complex systems based on a "Ubiquitous Language" shared by technical and business experts, rather than organizing primarily around technical infrastructure.

Domain-Driven Design becomes more valuable in the AI era because it gives agents a stable map of the problem space.

Here is the key idea behind this approach:

1. focus on the core domain
2. explore models collaboratively
3. speak a ubiquitous language within an explicitly bounded context

Fix 1: Define Domain Boundaries

This should be very clear in the problem specification phase.

We need to set out the entities, identities and objects we are going to work with. Based on this, we build models of how entities should be operating in the problem space we want to solve.