The web is full of services that host rich content such as videos, images, music and podcasts, maps and graphs, and all manner of different delights. Chances are, when you add your content to a site, it will offer you a way to embed that content in a web page somewhere else. Sites like YouTube have their own embeddable player that is popular to use in blog posts and even product pages.

https://www.smashingmagazine.com/2019/11/programmatically-discovering-sharing-code-oembed/