Microsoft is publishing new web-apps to its Store under its name. This is the first wave of PWAs for Windows 10.

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The first grouping of Microsoft-published and approved Progressive Web Apps (PWA) are now live in the Microsoft Store for those on Windows 10 build 1803 (aka Redstone 4). This batch is the first of what is expected to be hundreds of modified websites merged with Microsoft's app platform. Microsoft has promised that PWAs will be treated as "first-class citizens" in Windows 10. That's not just programming talk either as the hybrid apps – a cross between PWA and the Universal Windows Platform (UWP) – will often be published by Microsoft themselves.

There are two paths to get those PWAs into the Store: Developers can proactively submit PWAs to the Microsoft Store. The Microsoft Store, powered by the Bing crawler, will automatically index selected quality PWAs. Today's soft-launch falls in line with step number two: We've been using the Bing Crawler to identify PWAs on the web for nearly a year, and as we've reviewed the nearly 1.5 million candidates, we've identified a small initial set of Progressive Web App experiences which we'll be indexing for Windows 10 customers to take for a spin over the coming weeks…Throughout this process, we'll continue to vet our quality measures for PWAs, to make sure we're providing a valuable, trustworthy, and delightful experience to our mutual customers on Windows devices. Eventually, the process will be fully automated with PWAs auto-populating the Microsoft Store. Owners of those sites can reclaim their PWAs under their ownership later for further development or download statistics.