Can someone break down how a website like speedtest.net work exactly? I am not a developer, but in my very basic understanding of tech, I assume they have a certain 100mb file that is physically located on numerous servers around the world (or maybe a CDN-type setup?), and the visitor gets connected to a server closest to his/her IP address location... Or is there a more complex setup in place?
Grok provided a comprehensive explanation of your question, too detailed to share here. View it at: https://x.com/i/grok?conversation=1959947723836113337