SAN FRANCISCO—Microsoft announced a four-pronged effort to bring developers and their apps to Windows at its build conference today. One of these prongs—a way for Web developers to present their sites as apps—was already announced at Mobile World Congress earlier in the year.
The second prong is logical but not altogether surprising. In Windows 10, developers will be able to specially prepare existing Windows apps, whether Win32, .NET WinForms, .NET WPF, or any other Windows development technology, and sell them through the Windows Store. Unlike the “traditional” Windows application installation experience, these apps will be guaranteed to install, update, and uninstall cleanly—one of the important things that Store apps do to ensure that users feel confident trying apps out and removing them if they don’t like them. Behind the scenes, virtualization technology will be used to provide this isolation and robustness.
Islandwood and Astoria
The next two prongs are the more surprising: Microsoft is going after Android and iOS developers. With Project Islandwood, iOS developers will be able to take their iOS apps and build them for Windows. Microsoft has developed an Objective C toolchain and middleware layer that provide the operating system APIs that iOS apps expect. A select group of third parties have been using the Islandwood tools already, with King’s Candy Crush Saga for Windows Phone being one of the first apps built this way. King’s developers had to change only a “few percent” of the code in order to fully port it to Windows Phone.
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