System architecture: Complexities role in architecture entropy

This is the second paper in a series that discusses and further defines the notion of system architecture entropy. This paper specifically looks at the correlation between system architecture entropy and system complexity. The role of complexity, as it relates to entropy, is established by investigating entropy-complexity relationships in biology and information theory. Those concepts are then used to assert the relationship of complexity and entropy in system and system of systems (SoS) architecture. Along with defining the entropy-complexity system architecture relationship, examples of systems that demonstrate it are provided. Application of lessons noted during the process of establishing the system architecture entropy-complexity relationship are provided so that practitioners can immediately begin to apply the best practices that were uncovered through this study.