Microsoft Office 2013 (formerly Office 15) is a version of Microsoft Office, a productivity suite for Microsoft Windows. It is the successor of Microsoft Office 2010 and includes extended file format support, user interface updates and support for touch among its new features.
Microsoft Office 2013 comes in twelve different editions, including three editions for retail outlets, two editions for volume licensing channel, five subscription-based editions available through Microsoft Office 365 program, the web application edition known as Office Web Apps and the Microsoft Office RT edition made for tablets and mobile devices.
The Office 365 online services (previously aimed towards business and enterprise users) were expanded for Office 2013 to include new plans aimed at home use. The subscriptions allow use of the Office 2013 applications (along with other services) by multiple users using a software as a service model. Different plans are available for Office 365, some of which also include value-added services, such as 20 GB of SkyDrive storage and 60 Skype minutes per month on the new Home Premium plan. These new subscription offerings were positioned as a new option for consumers wanting a cost-effective way to purchase and use Office on multiple computers in their household.
A special version of Office 2013 known as Office 2013 Home & Student RT is shipped with all Windows RT devices, initially consisting of Word, Excel, PowerPoint, and OneNote. This edition, whilst visually indistinguishable from normal versions of Office 2013, contains special optimizations for ARM-based devices, such as changes to reduce battery usage (including, for example, freezing the animation of the blinking cursor for text editing during periods of inactivity), enabling touch mode by default to improve usability on tablets, and using the graphics portion of a device's SoC for hardware acceleration.
Windows RT devices on launch were shipped with a "preview" version of Office Home & Student 2013 RT. The release date for the final version varied depending on the user’s language, and was distributed through Windows Update when released. On June 5, 2013, Microsoft announced that with the upcoming release of Windows RT 8.1, Outlook would be added to the suite in response to public demand. Office RT modifies or excludes other various features for compatibility reasons or resource reduction. To save disk space; templates, clip art, and language packs are downloaded online rather than stored locally. Other excluded features include the removal of support for third-party code such as macros/VBA/ActiveX controls, the removal of support for older media formats and narration in PowerPoint, editing of equations generated with the legacy Equation Editor, data models in Excel (PivotCharts, PivotTables, and QueryTables are unaffected), searching embedded media files in OneNote, along with data loss prevention, Group Policy support, and creating e-mails with information rights management in Outlook.
As the version of Office RT included on Windows RT devices is based off the Home & Student version, it cannot be used for "commercial, nonprofit, or revenue-generating activities" unless the organization has a volume license for Office 2013 already, or the user has an Office 365 subscription with commercial use rights.
Windows Phone 8 ships with an updated version of the Office Mobile suite, consisting of mobile versions of Word, Excel, PowerPoint, and OneNote. In comparison to their Windows Phone 7 versions, the new versions add an improved Office Hub interface that can sync recently opened and modified documents (including changes to documents stored via Office 365 and SkyDrive), a separated OneNote app with additional features (such as voice notes and integration with the new "Rooms" functionality of the OS), and improved document editing and viewing functionality.