The core activity of Läng Consulting GmbH encompasses three main areas:
1. **Finance**: The company provides comprehensive financial services, including accounting, financial reporting, tax returns, controlling, and human resources.
2. **Information Technology**: Läng Consulting develops and implements IT solutions for clients, including planning and realization of infrastructure and software.
3. **Web and Social Media**: The company supports clients in designing their online presence, including web design, search engine optimization, and social media management.
Overall, Läng Consulting GmbH offers a wide range of services aimed at supporting clients in the areas of finance, IT, and online marketing.