Google Analytics is a web analytics service offered by Google that tracks and reports website traffic. It helps businesses of all sizes to measure the performance of their online presence, understand how people engage with their website, and track conversions from online campaigns. It provides a range of tools and reports, such as real-time analytics, audience demographics, and acquisition channels, to help businesses improve their online marketing and website performance. Some of the benefits of using Google Analytics includes ability to measure website traffic, audience behavior, conversion rates, and return on investment for campaigns, etc.