The core activity of AEW Investment AG encompasses three main areas:
1. **Software Development**: The company develops software solutions aimed at improving and advancing business processes for companies.
2. **Real Estate Management**: AEW Investment AG offers real estate management services, including the design of successful real estate investments.
3. **Telecommunications Solutions**: The company provides seamless communication solutions to support business success.
Overall, the core activity of the company can be described as a combination of IT services, real estate management, and telecommunications solutions.