See here for common tracking techniques. https://www.howtogeek.com/115483/htg-explains-learn-how-websites-are-tracking-you-online/ https://www.howtogeek.com/115

See here for common tracking techniques. https://www.howtogeek.com/115483/htg-explains-learn-how-websites-are-tracking-you-online/ https://www.howtogeek.com/115483/htg-explains-learn-how-webs... In terms of what ads to show you, AI not really necessary. Often it's just for stuff you've searched for on Google, amazon etc.