avanca energy AG is a company that focuses on sustainable energy and logistics solutions. I got to know Claus Sattler as a far-sighted IT strategist when we founded our subsidiary Greeen Solutions GmbH. Together with our IT team, Claus laid the software and hardware foundations for the growth of Greeen. In addition to his responsibility for the introduction of ERP and CRM, he and his colleagues from IT introduced Microsoft Teams and a standardized video conferencing system in all companies of our group. Together, his colleagues and Claus laid the foundations for the decentralized communication between people in the company that was so urgently needed during this time, even before the Covid 19 pandemic.