The core activity of IT-Keller GmbH is the provision of IT services, including: hardware and software support, remote maintenance and repair of computers and notebooks, training and consulting in the use of software applications such as Microsoft and SelectLine, web design and development, IT security services, including ransomware protection and response, and IT checks and analysis to evaluate the IT infrastructure of customers. The company thus offers comprehensive IT services for businesses and individuals to meet their IT needs and support their IT infrastructure.