Microsoft Office is a family of productivity applications and services produced by Microsoft for writing, calculation, presentation, email and collaboration. It exists as traditional desktop programs for Windows and macOS, browser-based apps, and mobile applications. The suite is designed for individuals, educators and organisations, and is offered through perpetual licenses and subscription plans that combine software with cloud storage and collaboration features. See the official product information at Microsoft Office for vendor details.

Core applications and formats

The most widely used components are:

  • Word — word processing, using DOCX as the default file format.
  • Excel — spreadsheet and data analysis, using XLSX and supporting formulas, charts and pivot tables.
  • PowerPoint — presentation creation with slides, multimedia and animation support.
  • Outlook — email, calendar and contacts, often connected to Exchange services.
  • OneNote — freeform note taking and organisation.
  • Access and Publisher — database and desktop publishing tools (Windows only).
  • Teams, OneDrive and SharePoint — collaboration, chat and cloud storage services integrated with the suite.

These applications share common features such as templates, support for Office Open XML file formats, macro automation via VBA, and cross-application interoperability. For product pages and component documentation visit suite component details.

Microsoft Office began as a bundle of separate programs and over time evolved into an integrated suite. Since the late 20th century the product line moved from boxed, perpetual-license copies to cloud-enabled services and subscription offerings. A key milestone was the introduction of Office 365, a subscription model that combined software access with cloud services; this offering was later expanded and rebranded under the broader “Microsoft 365” identity to include additional security and management features. For subscription and cloud information see Microsoft 365.

There are multiple licensing options to meet different needs: perpetual releases such as Office 2019 and Office 2021 provide one-time purchases for desktop use, while Microsoft 365 subscriptions provide continuous updates, cloud storage and enterprise management. In addition, Microsoft offers free, limited-feature web versions of many Office apps accessible through a browser and linked accounts. The current perpetual-release version is Office 2021, released in October 2021; businesses and consumers choose between one-time purchases and subscription plans depending on update and deployment preferences. Product and edition comparisons are available at edition information.

Microsoft Office is widely used across education, business and government due to its comprehensive toolset, extensive language support and ecosystem of templates, add-ins and developer extensibility. Notable considerations include collaboration features (real-time co-authoring), cross-platform compatibility, and security practices around macros and document sharing. Its integration with cloud storage, collaboration services and communications platforms has made it a central component of modern digital workplaces.