Microsoft today announced a new concept called Hosted Web Apps in Windows 10. In addition to the native Windows 10 apps, developers can easily convert their websites into Windows 10 apps using this Hosted Web Apps concept. Hosted Web Apps allows websites to access universal APIs such as notifications, camera, contact list, and calendar. You can even have Cortana integration in Hosted Web Apps. Web Developers can take advantage of their existing web investments to develop these Hosted Web Apps. We will learn more about it at Build developer conference in April.