What is Google Analytics?

Google Analytics is a web analytics service by Google.

The most used web analytics service on the Internet, Google Analytics tracks and reports website traffic.

The web analytics offering is a premium service, with a subscription based version, Google Analytics 360, also available.

Google Analytics for Mobile Apps is another version of the web analytics offering, which gathers data usage from iOS and Android apps.

What has an Urchin got to do with Google Analytics?