Hi! It's a little bit different than Optimizely, similar to Google Analytics Content Experiments - the difference is in the certainty of improvement. I spoke to our engineers, they said: "The concept is multi-armed bandit experiment. We are developing our own, unique algorithms, though."
Good to know, thanks! I'm a bit skeptical of the words "their own, unique algorithms", given the quality and pace of research in machine learning and deep learning, but that may just be my open-source bias...