Microsoft Windows 8 Professional Upgrade
Win 8 to Win 8 Pro Upgrade
Windows 8 Home users who want to install the Professional version of this operating system can use this Microsoft Windows 8 Pro Pack Pro Upgrade.
Upgrading to the professional version of this operating system allows you to keep all of the features available in the home version but adds features including BitLocker encryption, support for joining corporate domains and the Remote Desktop application to your PC.
Joining corporate domains
Remote Desktop application
Customize your Start screen with Live Tiles
Along with the new Start screen, the lock screen now includes e-mail, calendar, and clock widgets.
Windows has also made changes to make your PC more secure by boosting its existing security features and adding "SmartScreen", which acts to prevent suspicious programs or apps from being installed or running on your machine.
Stay safer with Windows Defender.
Encrypt your data with Bitlocker.
The upgrade process is very easy and is similar to other Windows upgrades.
Refresh Windows 8
Windows 8 also gives you the ability to "refresh" itself to give users a new starting point and a cleaner version of Windows.