Note that this process isn't static but dynamic: When sufficient requirements have been gathered, the team is almost ready to begin a preliminary HLD.

Voxli gets around these issues by offering users a static URL that they can then send around to their team members, which is far more convenient.

Galia Traub (WPI '09) contrasts the ECPD definition to Kulak's implications that engineering is about "static processes and brittle team structures that tend to discourage change."