What technology is used to embed content within an HTML document?

The technology that is used to embed content within an HTML document is an I-frame. An I-frame, or inline frame, is a unique HTML element that allows an external resource, such as another webpage, video, or interactive content, to be displayed within the current document. This enables developers to integrate various types of content seamlessly without needing to redirect users away from the original page.

Using I-frames is particularly beneficial for displaying ads, videos, and other third-party content, as it maintains the overall structure of the parent webpage while allowing diverse content to be loaded independently. This capability makes I-frames widely used in digital advertising and website design.