Cyber Physical Systems (CPS) are a new research subject that has piqued the interest of many scientists. It is transmuting the way people interact with established systems. Beginning with a definition of CPS, the paper goes on to examine the necessity for these systems to be implemented in many application areas, as well as the research hurdles of establishing an acceptable formalism that represents more than networking and information technology.

Keywords : Cyber-Physical Systems, Architecture, Modeling, Design, Dependability.