Amazon Payments deploys LinUCB contextual bandit on Amazon SageMaker AI to personalize acquisition funnel
Amazon Payments implemented a multi-objective contextual multi-armed bandit (LinUCB) on Amazon SageMaker AI to personalize content across a three-step acquisition funnel. In a seven-week online A/B test they report a high single-digit percentage relative lift in final-funnel conversion for one customer population while another saw no improvement; the team published the AWS architecture, method details, and a code repository for experimentation on synthetic data.