AWS WAF Bot Control for Targeted Bots now offers predictive Machine Learning (ML) technology to provide protection against distributed, proxy-based attacks. AWS WAF previously launched AWS Bot Control for Targeted Bots which provides protection against sophisticated bots that attempt to evade detection. Now, AWS WAF Bot Control for Targeted Bots can also be used to define block, challenge and Captcha rules against distributed bot attacks, such as attacks using residential and mobile proxies.
Source:: Amazon AWS