The core activity of Tillmanns Consulting GmbH is the provision of services in the areas of change management, interim management, and corporate consulting. Specifically, this includes: taking over leadership functions in cases of bottlenecks or unforeseen failures, optimizing business management processes and corporate culture, accompanying and implementing change processes in companies, planning and communicating changes in business processes and work culture, and taking over special assignments for internal 'task forces'. The company offers these services primarily to small and medium-sized enterprises (SMEs) and has industry expertise in the areas of IT, industry, and personnel services.