Microsoft Office, or simply Office, is a family of client software, server software and services developed by Microsoft. It was first published on August 1, 1988 by Bill Gates at COMDEX in Las Vegas. Initially, a marketing term for an office suite (bundled set of productivity applications) was the first version of Office Microsoft Word, Microsoft Excel and Microsoft PowerPoint. Over the years, Office applications have grown significantly with shared features such as a common spell checker, OLE data integration, and Visual Basic for Applications scripting language. Microsoft is also installing Office as a business listing software development platform under the Office Business Applications brand. On July 10, 2012, Softpedia reported that Office was used by more than a billion people worldwide.
Office is manufactured in different versions aimed at different end-users and computer environments. The original version, and most commonly used, is the desktop version available for computers running Windows and macOS operating systems. Microsoft also supports mobile apps for Android and iOS. Office on the web is a version of the software offered within a web browser.
Since Office 2013, Microsoft has promoted Office 365 as the primary access to Microsoft Office: it allows the use of the software and other services on a business model of a subscription, and users get free feature updates for the subscription software, including new features and cloud computing integration that are not necessarily included in Office “on-site” releases sold under conventional licensing terms. In 2017, revenue from Office 365 exceeded conventional license sales.