The core activity of Stephan Wegelin AG is the provision of services as a communications architect, particularly in the real estate market. This encompasses two main areas: 1. **Organizational and Personal Development**: This includes strategy work, change projects, team development, conflict resolution, career counseling, and personal coaching. 2. **Corporate and Real Estate Marketing**: This area involves creating marketing concepts and strategies for companies and real estate projects in the real estate market. Overall, the focus is on advising and supporting companies and individuals in the real estate market in developing communication strategies and optimizing their organization and leadership.