The Quran, sometimes written Kuran, is the holy text of the Islamic religion. It literally translates to "the recitation". Most religions have such books to guide their beliefs and provide some foundation for how to proceed in life.
You can read many such works online, and Microsoft is aiding in this with Islam 360, a searchable Quran app. The software giant has talked it up, though it isn't particularly new. Instead Microsoft wants to alert those who aren't aware of its existence and tout the features it brings along.
In a blog post Usman Ur Rehman Ahmed states "The app has over 1.5 Million Downloads on all platforms and has just been overloaded with tons of features for Windows Phone. The app is a resultant of efforts from Mr. Zahid Hussain Chihpa and is launched in collaboration with local Microsoft DX division".
Features include ten translations of Urdu and English with searchable features including audio, search the entire text using both English and Urdu and search using an Arabic word or rootword.
You can check it out by following the preceding link. Regardless of your beliefs, it may be worth a read to find out what it's all about.