PowerApps, which includes Microsoft Flow, is a high-productivity application development platform from Microsoft. The platform is used by Microsoft to build their own 1st party applications Dynamics 365 for Sales, Service, Field Service, Marketing and Talent. Individual users and teams within your organization can also build personal or team productivity applications with no-code or low-code. The whitepaper will provide guidance to those administrators responsible for planning, securing, deploying, and supporting applications built on the PowerApps platform.”]
Source: https://powerapps.microsoft.com/en-us/blog/powerapps-enterprise-deployment-whitepaper/