Starting in Unity 2017 , native OTOY Octane Render support has been integrated! OctaneRender is an amazing tool to create film quality 360 skyboxes / videos, trailers and screenshots to show off your latest game! Other features includes path traced rendering, lightmap baking, node based material editor, post-processing, and so much more! To get started, all you need to do is import one of OTOY’s assets and you will be on your way!
Octane Renderer Guides
OTOY Unity Scenes