Foundations

The foundational concepts that underpin Domain-Driven Design and Protean's approach to modeling software.

• Ubiquitous Language — A shared vocabulary between developers and domain experts.
• Bounded Contexts — Explicit boundaries around domain models.
• Analysis Model — Translating domain knowledge into code.
• Identity — What makes an entity unique.
• Invariants — Business rules that must always hold true.
• Changing State — How state transitions work in a domain.
• Streams — Event streams and their role in the architecture.