The final phase in our approach is actually building the renovation factory. The components that have been developed and prototyped need to be put into operation in an efficient production environment.
Given the size of legacy systems, issues like scalability and multi-processor execution of the factory are now also coming into play. Important supporting technologies are compilers that turn prototype specifications into efficient stand-alone C programs [7] and middleware that is optimized for the connection of language-oriented tools [4]. References [8,33,10,15] give overall pictures and further discussions of renovation factories.