Many industries rely heavily on embedded software and systems to maximize business value in their products. These systems are very complex and the architecture is important to control the complexity and make development efficient. There are often also connections between the embedded system and the different lifecycle processes, and hence to the enterprise systems supporting those processes. It is rare to start from scratch when developing new products, and instead these companies evolve their products over time, which means that architecting needs to be evolutionary. In this chapter, it is described what such an evolutionary architecting process can look like based on observations from industry, and how the process can be continuously improved using a maturity model. It is also presented how the embedded system relates to different elements of the enterprise architecture.