Fluid is a free and open sourcecomputer platform for real-time collaboration across applications. Microsoft first demonstrated the software at its Build conference in May 2019[1] as a framework that would allow for real-time collaboration between users of its Office on the webonline office suite. It replaces the concept of a "document" with a cloud address for real-time collaboration and sharing of content forms including text and tables. Microsoft expects to implement it in its Teams chat software, Outlook mail software, and other productivity software. It is designed for integration with other services, such as live translation and Cortana voice assistance.[2] Public and private previews of the software began in November 2019.[3][4] Microsoft open sourced the software in September 2020.[5]