Well, Myna https://mynaweb.com/ https://mynaweb.com/ uses multi-armed bandit algorithms for A/B testing (or A/B/../N testing if you prefer). An n-armed bandit

Well, Myna https://mynaweb.com/ https://mynaweb.com/ uses multi-armed bandit algorithms for A/B testing (or A/B/../N testing if you prefer). An n-armed bandit problem is a type of reinforcement learning problem, and the associated algorithms for solving these problems are considered machine learning.