Initially, the first version of the Office suite (productivity suite) was Microsoft Word, Microsoft Excel, and Microsoft PowerPoint . Over the years, Office applications have come much closer to common features like regular spell checking, OLE data integration, and Visual Basic for Applications scripting language. Microsoft also positions Office as a business process development platform under the Office Business Applications brand.
Currently, more than a billion people worldwide use Office suites.
Office is available in several versions, targeting different end users and computing environments. The original and most widely used is the desktop version, available for PCs running Windows and MacOS. The current desktop version is Office 2019 for Windows and macOS, released on September 24, 2018.
More recently, Microsoft has developed Office Mobile, which are free versions of Office applications for mobile devices. Microsoft also releases and launches Office Online, a web version of the core Office applications that is included as part of the Microsoft account.