[yashthakur]

It means load only the code for the page/route that you are visiting and not the code of entire site.

Suppose you visit only example.com/about-us page then why should the server load example.com, example.com/faq, example.com/blog code together with it?

I hope you got the point of code-splitting. :)

[fiatjaf]

A new name for a very old concept. People keep inventing these things...