Office 365 is a line of subscription services offered by Microsoft, as part of the Microsoft Office product line. The brand encompasses plans that allow use of the Microsoft Office software suite over the life of the subscription, as well as cloud based software as a service product for business environments, such as hosted Exchange Server, Skype for Business Server, and SharePoint among others. All Office 365 plans include automatic updates to their respective software. It refers to subscription plans that include access to Office applications plus other productivity services that are enabled over the Internet (cloud services). … The fully installed applications include: Word, Excel, PowerPoint, OneNote, Outlook, Publisher, and Access.