Editor's Note: Read the 2017 State of DevOps Report to learn how DevOps helps teams improve both IT performance and business results. Demand for people with DevOps skills is growing rapidly because businesses get great results from DevOps.
Single Subject Design. From Wikipedia, the free encyclopedia. Single-subject design or single-case research design is a research design most often used in applied fields of psychology, education, and human behavior in which the subject serves as his/her own control, rather than using another individual/group.
1 An engineered system , is a technical or socio-technical systems system which is the subject of a SE life cycle.  An engineered system context centres around an engineered system but also includes its relationships other engineered, social or natural systems in one or more defined environments.