The core activity of the company "DER KLIENT" is the provision of marketing management services, particularly in the B-to-B (Business-to-Business) sector, with a focus on: customer acquisition and care, increasing sales through portfolio expansion with existing customers, field service activities and representation of companies in the market, and maintaining existing customer relationships and adapting measures to the changing customer environment. The company supports its customers in developing strategies for customer acquisition, customer care and field service activities and accompanies their planning through to complete implementation in the market.