Banking system: core banking domain, core product document, risk domain, treasury domain, anti fraud domain and so on. Online training application : questionnaires domain, scoring domain, users management domain. 
A retail business may have an inventory domain, a purchasing domain, a human resources domain, a financial domain.Building blocks DomainsĪ domain is the logical area that defines the problem you want to solve.
When you read the code you read the domain model,when you talk to the business people you use the same language. The software code needs to incorporate the core concepts of the domain, defining the elements and the relationships between them. When the domain is complex, this is a difficult task, calling for the concentrated effort of talented and skilled people.Developers have to steep themselves in the domain to build up knowledge of the business.Įvans recommends that the best way to do this is to make software a reflection of the domain. All other features, vital though they may be, support this basic purpose. The heart of software is its ability to solve domain-related problems for its user. Why speak an ubiquitous language with domain experts and why define a domain rather than just start coding? The answer to the question is provided by Eric Evans in his book explaining :Įvery software program relates to some activity or interest of its user.
DDD code is clear and concise, it is the best “documentation” that expresses the design of the product. reduce complexity by applying object oriented design and design patters to avoid reinventing the wheel. Speak a ubiquitous language within an explicitly bounded context. Explore collaboration of domain practitioners (business or users) and software developers. Placing the main interest of the project into defining the core domain of the problem it wants to solve. The bounded contexts and the domains philosophy used in DDD relates to the challenges of splitting legacy monoliths into micro services or building new platforms using micro-services from start. The recent rise of interest into the topic appears as result of industry focus on developing micro-services. Some code examples would be nice to add.ĭomain Driven Design or DDD, is a software development approach coined by Eric Evans in his book Domain-Driven Design: Tackling Complexity in the Heart of Software, initially published in 2003. Writing this summary page just for my future reference, to be able to use it in at job activities. Summary of the Domain Driven Design concepts
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