Office 365 ProPlus is one of the subscription service plans in the new Office. It is productivity software (including Word, PowerPoint, Excel, Outlook, OneNote, Publisher, Access, and Lync) that is installed on your desktop or laptop computer. Office 365 ProPlus is a user-based service that allows people to access Office experiences on up to 5 PCs or Macs and on their mobile devices. Traditional Office installations were tied to the computers they were installed on. Office 365 ProPlus enables flexible new deployment options that IT and/or individual users can choose from to install Office.
Office 365 ProPlus delivers the same application experiences as Office Professional Plus 2013. However, Office Professional Plus 2013 is a traditional Office installation that is tied to the computers it is installed on, and it is available through volume licensing only. A user-based service, Office 365 ProPlus is available as a subscription.