3S Cloud Render Farm (3S) is a cloud render farm supporting Autodesk Maya rendering with V-Ray and Arnold (Blender, Houdini rendering are also available).
It’s hard to describe how happy 3S is to hear this following feedback 
(The feedback is written in Vietnamese (the original article in the attached link), 3S translated it into English)
"Finally, after many days of experiencing various types of render farms, we also found a solution to SpartaVFX’s rendering problem.
If talking about system setup standards, this is probably the top render farm that I have no worries about. Just upload and click to render without having to take care of the device crashes or not, what will happen if the money runs out. And, in terms of speed, you won’t even have time to cook breakfast if you forget to set it to a slower package.
Anyway, if you are working with Blender, Maya, Houdini with Vray, Arnold and don’t believe it, just try to check if it’s true or not"
https://www.facebook.com/hung.hoangviet/posts/10158921439699686
3s can provide you:
Rendering Speed: Unlimited number of high-configuration CPU/GPU servers to speed up your rendering and to make sure you never are in queues without paying any cost of priority.
Output Quality: No longer difficult for you to render images with 12k resolution.
Upload & Download: Upload & download multiple files simultaneously.
3S can handle even projects up to Terabyte, and support data auto-sync from/ to Google Drive & Dropbox.
Scene Analysis: Automatically detect missing assets and errors before rendering.
Reliable Cost: Our Free Preview Render feature gives you more accurate cost & time estimates and a preview image for free.
Your payment process will be secured with Paypal Purchase Protection.
Optimal Cost for high-quality images: Flexible options with various lines of GPU.
Security: High security with AWS Security Technology, Transport Layer Security (TLS), Non-Disclosure Agreement (NDA).
Technical Support: Always available with no extra.