The software program architecture of embedded computing devices is a depiction of the method as a set of buildings that aids in the reasoning and understanding of how the method will behave. Program architecture functions as the blueprint for the method as very well as the undertaking developing it. The architecture is the major framework of vital embedded method traits these types of as efficiency, modifiability, and stability, none of which can be realized devoid of a unifying architectural eyesight. Architecture is an artifact for early examination to guarantee that a design method will guide to an satisfactory method. This chapter will focus on the details of these features of embedded software program architectures.