3.2 Value ports
A value port is a willingness to provide or request value objects.
Value ports belong to actors, market segments or value activities.
- A value port of an actor is a willingness to provide or request
value objects to or from its environment.
- A value port of a market segment is a willingness of each actor
in the segment to provide or request value objects to or from
its environment.
- A value port of a value activity of an actor is a willingness of
the activity to provide or request value objects to or from its
environment inside or outside the actor.
Each value port has a role in or out. This indicates whether the actor
requests or is willing to provide a value object, respectively. A value port
is depicted by a small triangle that indicates the role of the port
(figure 3.1).