what websites use Iframes?

Question

like where and how do they use them

Answer 1

if you want to use Google map or you want youtube video will be played on your website. there is a button called embed . if you will click on that it will generate the iframe . then you have to copy the iframe and paste it on your code between body tag.

Thanks.

Answer 2

what I mean is if I were to use an iframe for a website then how would I use them and what for, I still don't fully grasp the concept of Iframes and their usage