Ad Extensions are additional pieces of information that can be added to online advertisements, typically in pay-per-click (PPC) campaigns, to make the ads more informative, engaging, and effective. These extensions can include extra text, links to specific pages on a website, contact information, location details, or even product images. Ad extensions are used in platforms like Google Ads to enhance the visibility and appeal of an ad, often leading to higher click-through rates (CTR) and improved ad performance. Examples of ad extensions include sitelink extensions, call extensions, location extensions, and price extensions.