A/B Testing is a user experience research methodology that involves comparing two versions of a webpage or other product to determine which performs better. Coursera's A/B Testing skill catalogue teaches you about this crucial component of product development and optimization. You'll learn how to design, implement, and analyze A/B tests to make data-driven decisions and improve user engagement. Additionally, you'll gain an understanding of statistical analysis methods for interpreting test results, ethical considerations, and best practices for running successful tests. This skill is essential for roles such as product managers, UX designers, data scientists, and digital marketers.