Seems like a cloud-hosted SaaS (or AI/ML as a service?) solution that let you build deep learning AI/ML models written in Jupyter notebooks that ran on their cloud infrastructure?
I'm not sure how this differentiates from, or competes against, very similar AI/ML offerings from the larger public cloud providers (Azure Machine Learning comes to mind, though I'm sure AWS and GCE have something similar.)
I never used it much, as I tend to prefer a real, SSH-able machine, but it was always near-ish the top of my list of things to revisit. Not quite at the top though.