The age of digitization can be characterized by the fact that digital technology ismore and more closely integrated with business models. It provides key supportof everyday life both in business and the private. In economy, more and moreenterprises directly depend on their abilities to combine all the potentials ofdigital technology with their business models and their possibilities in the marketgenerating customer experience and customer journeys. Here, it is absolutely clearthat software is the most important part of digital technology since, in the end, itdetermines the functionality of digital systems and plays a decisive role (see [1]).For companies, it becomes a key capability to understand how software can beused to create innovative products, innovative processes, and instruments to reachthe customer. As a consequence, more and more software platform companies aretypical for software technology with platforms which can guarantee a short timeto market, high quality, and low costs with respect to maintenance and evolution.For platform companies and generally for software-intensive systems, architecturalissues become most decisive.