In this paper we discuss a research project on design and use of a Business Architecture. The Business Architecture objective is to improve the adaptability of a corporation to its strategy. A Business Architecture attributes the responsibilities for important business and/or economic activities to business domains. This can be done on the level of supply chain, enterprise and/or business unit.. The Business Architecture concept clarifies the complexity within an organization and is a useful starting point for the coherent design and governance of functional, information, process and application architectures