Google Analytics has a lot of advanced functionality which allow you to know many things about who visits a website. We use it only to know essentials things: who visits the website – his language, location, device, browser and operating system – what he is looking at – classical data traffic: page views, average time and the ranking of the most viewed pages, etc. – and where he comes from – the so-called referrals: if you log in from Facebook, Google, from the newsletter and so on.
All the information that Google Analytics collects arrives to us anonymously. This means that we do not know what your name is, where do you live, what your email address is, what kind of pages you have seen, how much time you have spent on the website and where you came from, but only that in a certain period many people were visiting the site and they were looking on it for a certain period and they have seen some pages, etc.