A software company has won a contract to implement its product for a client. As part of the implementation work, a business analyst (BA) is asked to compile information about the other client applications that will integrate with the new system and provide the information graphically. To establish the boundaries of the new system, the business leaders need to know the interfacing client applications and the type of information that will be exchanged between the existing and new systems.
Which type of diagram should the BA use?