Domain Model
A domain model is a conceptual representation of the problem domain in software development, capturing the key entities, their attributes, relationships, and business rules. It serves as a blueprint for understanding and structuring the core logic of an application, independent of technical implementation details. This model helps bridge the gap between domain experts and developers by providing a shared vocabulary and clear structure.
Developers should learn and use domain models when building complex business applications, such as enterprise systems, e-commerce platforms, or financial software, to ensure the code accurately reflects real-world processes and constraints. It is particularly valuable in Domain-Driven Design (DDD) to manage complexity, improve maintainability, and facilitate communication between technical and non-technical stakeholders. By focusing on the domain first, it reduces the risk of misalignment between software behavior and business needs.