...Before Xamarin Player, you could use the Xamarin technologies in Visual Studio 2017 to create cross-platform apps that run on Windows 10, Android, and iOS, and from a single solution in that environment. For testing and debugging purchases, the Windows 10 versions of those apps could run directly on the PC, or in a virtual machine. And the Android versions of those apps could run on a virtual machine as well.

But iOS was a lot more complicated: You had to remotely connect to a properly-configured Mac on your local network and then compile and run the app on an iOS emulator on the Mac.

With Xamarin Player, developers can get up and running with iOS more quickly and easily. So, now you can “write, execute, and debug code continuously on an iOS [or Android] device straight from the [Visual Studio] IDE,” as Microsoft’s Joseph Hill notes. But … “to completely develop your app for iOS, you’ll need to install and configure a complete Xamarin development environment, which requires a Mac for iOS tools, including storyboard designers, app extension development, app packaging/signing, and more.”...

Read more: Microsoft Clarifies How Xamarin Live Player Works - Thurrott.com