HTML (HyperText Markup Language) is the standard language used to structure content on the web. It uses markup elements called tags to describe different parts of a webpage, such as headings, paragraphs, links, and images. Web browsers interpret these tags and render the content accordingly, allowing users to view structured information on the internet.

Example: Simple HTML content

<h1>Welcome to My Website</h1>
<p>This is my first webpage written in HTML.</p>

This example shows a heading and a paragraph, two of the most common elements used to structure web content.