Ubiquitous language

In DDD, we should build a common and rigorous language between developers and users. This language should be based on the domain model and will help us have a ubiquitous and fluid conversation with the domain experts, and will prove to be essential when approaching testing.

Since our domain model is part of our software, we should be precise to avoid any ambiguity and evolve both model and language as our knowledge as the domain grows. But when creating software, the usage of the ubiquitous language should not be only in our domain model, but also in our domain logic and even architecture. It will allow a ubiquitous understanding by any team member.