Google Analytics is a web analytics service offered by Google that tracks and reports website traffic, currently as a platform inside the Google Marketing Platform brand. Google launched the service in November 2005 after acquiring Urchin.
As of 2019, Google Analytics is the most widely used web analytics service on the web. Google Analytics provides an SDK that allows gathering usage data from iOS and Android app, known as Google Analytics for Mobile Apps. Google Analytics can be blocked by browsers, browser extensions, and firewalls and other means.