When designing complex automotive systems in practice, employed technologies and architectural decisions need to reflect business goals. While the software architecture community has acknowledged the need to align business goals with architectural decisions, there is a lack of practical approaches to achieve this alignment. In this paper, we intend to close this gap by providing a systematic approach for architecture-business alignment. The approach describes how to align architecture with business concerns by eliciting goals, identifying quality attributes, and deriving architectural tactics. We use design science research to iteratively develop and evaluate the approach together with an international automotive manufacturer. We show the application of the proposed approach within our participating company leveraging a use case related to software-over-the-air technologies. We conclude that the proposed approach is perceived as beneficial by our participants, since it provides a structured mechanism to align architecture and business goals by determining key architectural concerns as quality attributes and tactics.