What is the difference between internal and external links?

Internal links connect pages within the same domain, helping search engines understand site structure and distribute link equity. For example, a link from a product category page to a specific product page on the same e-commerce site is an internal link. External links (also known as outbound links) point from your website to a different domain. These links can provide additional resources for users and signal to search engines that your content is well-researched and authoritative. The other options are incorrect because they describe specific technical implementations or mischaracterize the fundamental distinction between internal and external links. The presence or absence of parameters, specific HTML tags, or JavaScript does not define whether a link is internal or external.