The company's core activities encompass two main areas: 1. Auditing: The company provides comprehensive services in the fields of auditing, foundation audits, capital increase audits, and other related services. 2. Real Estate Management: The company manages rental and commercial properties, floors or co-ownership, and also offers marketing and valuation of real estate. There is no indication of core activity in the area of software or IT services, although the company states that technology is an important part of their daily business operations.