Microsoft office is combination of apps such as Microsoft Excel, Microsft Word, Microsoft PowePoint, Microsoft, Visio, Microsoft OneDrive, Microsoft Access and more.
Microsoft office released different version office 2010, office 2016, office 2011 for Mac and office 365. all Version has same features and funcationality. Office 365 is the online version where your work will be on cloud and you can access it from anywhere and anytime.
After purchasing Microsoft office, there is download, install and activation process. Microsoft had provide instruction guide in form of Documents, Vedio and online support to setup office from www.Office.com/Setup
Susbcriber should always keep their product key to install office to enter office product key on Office.com/Setup