What is Power Apps?
Power Apps is an initiative by Microsoft that lets you quickly build and share powerful low code applications. It’s a suite of apps, services, and data platforms that enables rapid application development to build custom apps based on business requirements.

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You can quickly create custom business apps that connect to your business data either on-premises (Excel, Office 365, SharePoint, and more) or data platform (common data source for apps) or

Power Apps at its core is a platform as a service that enables you to create applications that run on any mobile device or browser. The purpose behind developing Power Apps is to make users build applications with new capabilities without having coding expertise. Microsoft touts an initial visual design for PowerApps, with drag-and-drop functionality.

Power Apps has connections with various Microsoft-based and third-party applications, including SharePoint, SQL server, and OneDrive in the Office 365 productivity suite and Google Docs, Dropbox, Dynamics CRM, and Oracle.

Microsoft Power Apps Features
Power Apps comes with features that allow you to build apps without coding. Below listed are the powerful features of Power Apps:

Easy integration with other Microsoft services: One of the primary reasons for using Power Apps is that it’s easily connectable with other Microsoft services like Excel, OneDrive, SharePoint, etc.
User-friendly Interface: Power Apps supports a user-friendly interface. With this, you can build an app easily, even if you don’t have any development experience. Create interfaces that can perform CRUD operations
Canvas Apps and Model-driven Apps: There are two ways by which you can develop apps in Power Apps - Canvas and Model-driven Approach. You can design an app just by dragging and dropping elements onto a canvas. With model-driven apps, much of the layout is determined and designated by the components you add.
Cloud Connectivity: It’s extremely easy to connect to cloud services like SQL, Dropbox, Google Drive, etc., with Power Apps.
App creation and sharing: Supports an easy drag and drop interface for the creation of apps. You can easily share with anyone you want with Power Apps.
Cost-effective: If you want to develop rich business applications but can’t afford developers, start using this fantastic tool. Power Apps is cost-effective.
Common Data Service (CDS): CDS allows you to store and manage data securely used by business apps. Data within CDS stored in the form of entities. An entity is a set of records that stores data similar to a table in a database. CDS for Apps contains a set of legal entities that cover typical scenarios. You can still create custom entities particular to your company and populate them with data using Power Query. Developers use Power Apps to build rich apps using this data.

What is a Power Platform for Power Apps?
Microsoft Power Platform comprises the Power BI, Power Apps, and Flow. These three services provide tools to manage the data of any enterprise process.

PowerBI is used to display and analyze the data. It’s a real-time, interactive data visualization BI tool
PowerApps are used to modify data. It builds apps with less code in no time for the web, Android & iOS devices
Microsoft Flow is used to automate data. It offers powerful workflow automation with the no-code approach and easy integration