What is the Business Model of Microsoft? Everyone is using a Windows PC right now, probably a pirated version? Then how does Microsoft make money? Microsoft is not only about Windows. Of course, it plays a big part in the business. Also, the Operating System business helped it grow as a huge brand.But what if I tell you that Windows Operating System makes only 15.8% of Microsoft’s revenue? Point to note that Microsoft made $125.84 Billion in Fiscal Year 2019.Other Revenue Sources? Check it out here