In the journey of creating and maintaining large sociotechnical systems, engineering plays a pivotal role in turning architectural blueprints into tangible, functioning entities. This chapter begins by bridging the gap between the theoretical constructs of Unit Oriented Enterprise Architecture and the practical aspects of bringing these concepts to life. LSS engineering is not merely about the technical assembly of system components; it encompasses a holistic approach that integrates the complex interplay of technology, human factors, and organizational dynamics.