UWP is a part of Windows 10 and Windows 10 Mobile. UWP apps do not run on earlier Windows versions.
Apps that are capable of implementing this platform are natively developed using Visual Studio 2015 or Visual Studio 2017. Older Metro-style apps for Windows 8.1, Windows Phone 8.1 or for both (universal 8.1) need modifications to migrate to UWP.
During the 2015 Build keynote, Microsoft announced a collection of UWP “bridges” to allow Android and iOS apps to be ported to Windows 10 Mobile. Windows Bridge for Android (codenamed “Astoria”) was a runtime environment that would allow for Android apps written in Java or C++ to run on Windows 10 Mobile and published to Windows Store. Kevin Gallo, technical lead of Windows Developer Platform, explained that the layer contained some limitations: Google Mobile Services and certain core APIs are not available, and apps that have “deep integration into background tasks”, such as messaging software, would not run well in this environment. Windows Bridge for iOS (codenamed “Islandwood”) is an open-source middleware toolkit that allows iOS apps developed in Objective-C to be ported to Windows 10 Mobile by using Visual Studio 2015 to convert the Xcode project into a Visual Studio project. An early build of Windows Bridge for iOS was released as open-source software under the MIT license on August 6, 2015, while the Android version was in closed beta.
In February 2016, Microsoft announced that it had ceased development on Windows Bridge for Android, citing redundancies due to iOS already being a primary platform for multi-platform development, and that Windows Bridge for iOS produced native code and did not require an OS-level emulator. Instead, Microsoft encouraged the use of C# for multi-platform app development using tools from Xamarin, which they had acquired prior to the announcement.
UWP is an extension of the Windows Runtime. Universal Windows apps that are created using the UWP no longer indicate having been written for a specific OS in their manifest build; instead, they target one or more device families, such as a PC, smartphone, tablet, or Xbox One, using Universal Windows Platform Bridges. These extensions allow the app to automatically utilize the capabilities that are available to the particular device it is currently running on. A universal app may run on either a mobile phone or a tablet and provide suitable experiences on each. A universal app running on a smartphone may start behaving the way it would if it were running on a PC when the phone is connected to a desktop computer or a suitable docking station.
Games developed for UWP are subject to technical restrictions, including incompatibility with multi-video card setups, difficulties modding the game and using the game with programs such as Fraps, overlays (such as Steam), or key binding managers. During Build 2016, Microsoft Xbox division head Phil Spencer announced that the company was attempting to address issues which would improve the viability of UWP for PC games, stating that Microsoft was “committed to ensuring we meet or exceed the performance expectations of full-screen games as well as the additional features including support for overlays, modding, and more.” Support for AMD FreeSync and Nvidia G-Sync technologies, and disabling V-sync, was later added to UWP.
The above is a brief about Universal Windows Platform. Watch this space for more updates on the latest trends in Technology.