4th place: Cloud services. According to McKinsey, hardware and software for internet-based data exchange could make IT infrastructures up to 20% more productive. This requires server structures, high-speed networks and cloud management software. More and more services are being offered online, and more and more software and computing power can be implemented decentrally via the cloud. The industry will be worth between 1.7 and 6.2 trillion US dollars in 2025.