Sequence activities is the process of identifying and documenting relationships among the project activities. In the project management, the key benefit of this type of process is that it defines the logical sequence of work to obtain the greatest efficiency given all project constraints.
In the project management process groups and knowledge area mapping the sequence activities fall under the planning process group and project time management knowledge areas. The project schedule development uses the outputs from the processes to define activities, sequence activities, estimate activity resources, and estimate activity durations in combination with the scheduling tool to produce the schedule model.
In the sequence activities data flow diagram, every activity and milestone except the first and last should be connected to at least one predecessor with a finish-to-start logical relationship and at least one successor with the finish-to-start or finish-to-finish logical relationship. Sequencing can be performed by using project management software or by using manual or automated techniques.
Moreover, the schedule management plan identifies the scheduling method and tool to be used for the project, which will guide how the activities may be sequenced.
This term is defined in the 5th edition of the PMBOK.