HTML embedding is very useful when you want to embed, or have, other websites' contents or pages to be on your own web page. For example: a YouTube video, a Google Forms, a Wikipedia article, or even other pages in your own website.
In this example, we used the <iframe> tags to embed MacWeb to our web page. There are three attributes: src, width, and height.
In conclusion, if you want to put another webpage on your own webpage, use the <iframe> tags with the URL of the site in the src attribute.