STRENGTHS
The model has proven effective in detailing the system activities for function modeling.
IDEF0 models provide an abstraction away from timing, sequencing and decision logic. However, it is easy to use IDEF0 for modeling activity sequences whenever needed. (Order the activities from left to right in the decomposition diagram).
Provides a concise description of systems, by using the ICOMS. (Inputs, Controls, Output, Mechanism)
The hierarchical nature of IDEF0 allows the system to be easily refined into greater detail until the model is as descriptive as necessary for the decision making task.