The successful development of digital solutions almost always requires the cooperation of different disciplines. Designers, software developers and application specialists are necessary. In addition, ethnographers, economists, lawyers, mathematicians and others are often needed, whereby several expertises are usually required in each discipline. Good solution design requires, for example, knowledge of good practice examples, the ability to co-create with users, user experience and accessibility expertise, a talent for durable design, heuristics for dealing with complexity, writing usable requirements specifications and ethical reflection. At the BFH Centre Digital Society, we do not rely on interfaces between disciplines, but work together freely in a transdisciplinary way. The methods used result from the practical question.