The clickable words in a hyperlink. In SEO, anchor text is a ranking signal to Google, as it provides context about the destination site. For example, if many websites link to one particular website using the anchor text “free stock photos”, Google uses that information to understand the destination site is likely a resource with free stock photos. Theoretically, that could help the stock photos website rank in Google for keywords related to stock photography.
It's also considered The actual text of a link to a web page. On most websites, this text is usually dark blue and underlined, or purple if you’ve visited the link in the past. Anchor text helps search engines understand what the destination page is about; it describes what you will see if you click through.