< All the HTML Tags >

Definition:

The HTML <aside> tag is used to define content that is indirectly related to the main content, such as sidebars, pull quotes, or advertisements.

Content inside an <aside> element should be tangentially related to the surrounding content, often serving as supplementary information. This tag improves the structural semantics of your webpage, helping search engines and assistive technologies understand the importance and role of the content.

For a well-organized layout, the `<aside>` tag is typically placed within the main body or near the primary article but is easily distinguishable from the core content.