It is one of the steps during Strategic Design process. During this process, you divide the business domain into smaller problem domains which helps with a definition of physical boundaries and ownership boundaries. Bounded contexts helps with a division of ubiquitous language into smaller ones where words have assigned meaning and the meaning changes between contexts. It is worth noting that bounded contexts are not independent; they need to work with one another to achieve the goal of the system. Because of that, bounded contexts will have defined touch points called contracts and once those are defined, a context map is created.