Microsoft Corporation is the world’s No. 1 designer, developer and marketer of operating systems and software for PCs and servers. The group also develops an activity of manufacturing and selling computer equipment. Turnover by activity is broken down as follows: – sale of operating systems and application development tools (49.4%): intended in particular for servers (Azure, SQL Server, Windows Server, Visual Studio, System Center , GitHub, etc.) and microcomputers (Windows); – development of cloud-based software applications (25%): productivity software (Microsoft 365; Word, Excel, PowerPoint, Outlook, OneNote, Publisher and Access), integrated management and customer relationship management (Dynamics 365 ), online file sharing and management (OneDrive), and unified and collaborative communications (Skype and Microsoft Teams); – sale of video game consoles and software (8.8%): notably Xbox; – provision of services to businesses (3.1%); – sale of computers, tablets and accessories (1.9%); – others (11.8%). 50.9% of turnover is made in the United States.