How did they come into being.

History

login to server and look up dns using whois command in c

What it's like to own:nameserver hosting, pricing, renewal, requirements

Each object is tested for optimal heuristics (fewest lines of code, most relative) Sometimes even making base64 images to load page faster--This means the picture is stored in the code instead using a link to the image.

testing in different browsers, devices

Relative URLs - make anything instantly findable