Features in Windows 10 Pro are aimed purely at the business market. Domain join, allows you to bring in your own PC and connect it to the office domain. Group policy management allows an IT admin to control & monitoring of PCs. If you’re running an ancient Web app at your office that doesn’t work with Microsoft Edge or Internet Explorer 11, the Enterprise Mode Internet Explorer allows you to drop into an Internet Explorer 8 mode inside your browser. Likewise, if your business needs specialized enterprise apps, an IT admin can lock down the Windows Store to make sure employees get those, and nothing else. There’s also the ability to join Azure Active Directory, with single sign-on capabilities. There are lots of functionalities for business to buy Windows 10 Pro.