Microsoft
Microsoft is the Global Leader in Computer Operating System Software and Office Productivity Software. 
Operating System :
Windows 10 Home, Windows 10 Pro
Office 2019 Applications :
Office 2019 Home/Student, Office 2019 Home/Business, Office 2019 Pro
Office 365 Cloud Services :
Home Use :
Office 365 Personal, Office 365 Home
Office Use :
Office 365 Business Essentials, Office 365 Business, Office 365 Business Premium
