Domain-based architecture
Domain-driven design is an approach to developing software for complex needs by deeply connecting the implementation to an evolving model of the core business concepts. Its premise is:
- Place the project's primary focus on the core domain and domain logic.
- Base complex designs on a model.
Architecture based on Process Domains
- Start with the business corner stones. Decisions on direction, purpose and design of the organization.
- Next, identify the business domains: tightly connected business processes with a lot of interaction. Domains like Produce-to-Order, Order-to-Cash, Gain-and-Retain Customers.
Domains as building blocks in designing IT Strategy and IT Architecture
- The definition of the domains reflects the structure and requirements of the business. Domains are characterized by high cohesion within each domain and loosely coupling between the domains.
- Cohesion is a measure of how strongly related and focused the various responsibilities (e.g. functionalities, information flows) in a domain are.
- Coupling is a measure of how strong two domains are dependent on each other in a sense that changes in one domain require changes in the other domain.
The breakdown of the business processes into domains
- Permits ourselves a structured view on business.
- Reduces the complexity over the whole value chain and concomitant increases the flexibility in the design of each domain.
- Creates within each domain an area of similar competences, ways of thinking, goals and solution coverage, which support an agile further development and best aligned business support to each domain.
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