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An overview of V-Ray.

Source: cgshop.eu
V-Ray is a computer-generated imagery rendering software application developed by Bulgarian Chaos Group that was established in Sofia in 1997.
V-Ray is a commercial plug-in for third-party 3D computer graphics software applications and is used for visualizations and computer graphics in industries such as media, entertainment, film and video game production, industrial design, product design, and architecture.
V-Ray is a rendering engine that uses global illumination algorithms, including path tracing, photon mapping, irradiance maps, and directly computed global illumination.
It is also a commercial plug-in for third-party 3D computer graphics software applications and is used for visualizations and computer graphics in industries such as media, entertainment, film and video game production, industrial design, product design and architecture.
The desktop 3D applications that are supported by V-Ray are:
Autodesk 3ds Max
Autodesk Revit[2]
Cinema 4D
Maya
Modo
Nuke
Rhinoceros
SketchUp
Katana
Unreal
Houdini
Blender
When it comes to architectural rendering, V-Ray has its own advantages and specificities. Mentioned below are some of the profiting features of using V-Ray for your rendering.
1. VRay is fast. Real fast.
2. A wealth of options.
3. VRay is simply the best for realistic visualization.
4. Speed of VRay is great for quick animations.
5. Light and Shadow are top-notch
6. It works seamlessly with Rhino, 3DS Max, SketchUp.
7. It has a steep learning curve which is also useful.
8. Extensive Material Library and resources.
9. Real-world material rendering
10. There are plenty of resources for noobs and professionals.
VRay calls for better experiences and better quality render