"A CONTEXT MAP is in the overlap between project management and software design." #readingToday

A CONTEXT MAP is in the overlap between project management and software design. The natural course of events is for the boundaries to follow the contours of team organization. People who work closely will naturally share a model context. People on different teams, or those that don't talk, even if they are on the same team, will split off into different contexts. Physical office space can have an impact too, as team members on opposite ends of a building— not to mention different cities— will probably diverge without extra integration effort.

Domain-Driven Design, Eric Evans