A/B testing KPIs (Key Performance Indicators) refer to the specific metrics and data points used to measure the success of A/B testing, a method of comparing two versions of a webpage or marketing campaign to determine which one performs better. These KPIs can include conversion rates, click-through rates, bounce rates, and other relevant data that help businesses make data-driven decisions and optimize their strategies for maximum impact. A/B testing KPIs are essential for evaluating the effectiveness of different variations and identifying areas for improvement, ultimately leading to better overall performance and increased success in achieving business goals.