The market of electronic appliances shows a fast increasing diversity.
Manufacturers must be able to combine existing functions and new applications
in a short time frame. A large amount of accumulated SW code (legacy) has
to be reused in new ways.

The architecture(s) must be adapted to these new ways of working.
Revolutionary adaptations have proven to be extremely risky.
Opportunistic extension and integration decrease the quality of the code base,
making it increasingly more difficult to continue.
Architectural refactoring is a feedback based method to evolve an architecture.