The objective of this chapter is to provide guidelines for designing the behavior view of a software system. It covers the refinement of the system’s overall control flow to ensure cohesion across runtime operations, the identification of key behavioral elements with significant control logic or interaction complexity, and the specification of detailed control flows for these elements using appropriate behavioral modeling techniques. These guidelines enable architects to construct a precise and analyzable behavior architecture that accurately represents the system’s dynamic behavior in alignment with functional requirements and architectural integrity.