# Is domain a bounded context?

## Is domain a bounded context?

A bounded context is simply the boundary within a domain where a particular domain model applies. Looking at the previous diagram, we can group functionality according to whether various functions will share a single domain model.

## Can a domain have multiple bounded contexts?

Anything that shows domain concepts, relationships, rules, and so on. Since a bounded context is a boundary for a model, it could include concepts from multiple subdomains. Or a single subdomain could be modelled as multiple bounded contexts.

**What is domain and subdomain in DDD?**

Solution. Define services corresponding to Domain-Driven Design (DDD) subdomains. DDD refers to the application’s problem space – the business – as the domain. A domain is consists of multiple subdomains. Each subdomain corresponds to a different part of the business.

### What is domain and sub domain?

A subdomain is an additional part to your main domain name. Subdomains are created to organize and navigate to different sections of your website. In this example, ‘store’ is the subdomain, ‘yourwebsite’ is the primary domain and ‘.com’ is the top level domain (TLD).

### What is bounded context example?

Such a Bounded Context represents a boundary around a set of functional features (user stories / use cases). For example, everything that is related to customer management in an insurance scenario: create customer, update customer, update customer address, etc.

**What is a domain context?**

Domain Context module is an integration module for the Domain Access module and the Context module. The Domain Access module allows administrators to set specific settings for each of their domains that are using the same code base.

## How many aggregates are in a bounded context?

I suppose, that it’s fine to have maximum 3-4 aggregates per single bounded context. If there are more aggregates in single bounded context, then there are probably some issues with the software design.

## What is the difference between subdomain and bounded context?

In DDD, a subdomain in the problem space is mapped to a bounded context in the solution space. A bounded context is an area of the application that requires its own ubiquitous language and its own architecture. Likewise, a subdomain is a segment of the domain, and a bounded context is a segment of the solution.

**How do I find the domain of a DDD?**

To identify bounded contexts, you can use a DDD pattern called the Context Mapping pattern. With Context Mapping, you identify the various contexts in the application and their boundaries. It’s common to have a different context and boundary for each small subsystem, for instance.

### What is domain in Microservices?

Domain-driven design is the idea of solving problems of the organization through code. The business goal is important to the business users, with a clear interface and functions. This way, the microservice can run independently from other microservices. Eventually, this creates more value for the end-user.

### What is an example of a domain?

A domain name (often simply called a domain) is an easy-to-remember name that’s associated with a physical IP address on the Internet. It’s the unique name that appears after the @ sign in email addresses, and after www. in web addresses. Other examples of domain names are google.com and wikipedia.org.

**What is the difference between a sub-domain and a bounded context?**

A sub-domain delimits a domain and exists within the problem space. A bounded context delimits the domain modeland exists within the solution space. The ideal is full alignment between a sub-domain and a bounded context, however in practice a degree of flexibility must be accepted in this regard.

## How are domains and bounded contexts used in DDD?

The Domain Driven Design (DDD) book and community use the language of Domains and Bounded Contexts. Often there is confusion around what is a Domain, Sub-Domain, Bounded Context and how do we tell the difference between one or other when we are in the trenches.

## Which is the optimal solution for bounded contexts?

The optimal solution would be to have one bounded context in one subdomain. The world is not a perfect place, software even less so, so it might happen that one bounded context spans multiple subdomains, or that one subdomain has multiple bounded contexts.

**What’s the difference between a sub-domain and a domain?**

The key to understanding the difference between a bounded context and a sub-domain is understanding the difference between a domain and a domain model. The domain, in effect, is the problem to be addressed with a software effort. It is the problem space.