A few days ago Google released open source AI toolkit,
and it is already available to run on Amazon Web Services.
Expect Azure version soon...
tensorflow/README.md at master · pavlovml/tensorflow · GitHub
"Play with TensorFlow on a real GPU. This is a fork of TensorFlow with support for AWS G2 instances using CUDA 7.0. The NVIDIA GRID K520 cards these instances have use CUDA Compute 3.0 which is not currently supported by TensorFlow, but as far as I can tell they still work."