Google Analytics is a platform that collects data from your websites and apps to create reports that provide insights into your business.

To measure a website, you first have to create a Google Analytics account. Then you need to add a small piece of JavaScript measurement code to each page on your site. Every time a user visits a webpage, the tracking code will collect pseudonymous information about how that user interacted with the page.

When the measurement code collects data, it packages that information up and sends it to Google Analytics to be processed into reports. When Analytics processes data, it aggregates and organizes the data based on particular criteria like whether a user’s device is mobile or desktop, or which browser they’re using.