Book excerpt: A System of Systems (SoS), as distinct from a system of parts, is a system comprised of pre-existing autonomous and interdependent systems. This book provides two unique contributions to the body of knowledge of System of Systems (SoS) theory, management, and engineering. Firstly, it assesses the dynamics of a SoS through the use of five core characteristics, namely autonomy, belonging, connectivity, diversity and emergence. Secondly, it describes a mechanism of collaboration whereby the characteristics of autonomy and belonging are satisficing for the SoS constituents and the resultant emergent behavior provides value for the observer.