Title Tag
The title tag is an HTML element in the head of a web page that defines the page title; it appears as the clickable headline in search results, in the browser tab and often as the link text in AI answers and social media previews.
In practice
A good title tag is unique per page, carries the most important keyword as far forward as possible and stays under roughly 60 characters, so that it is not truncated in the search results. Google frequently rewrites weak or unsuitable title tags in the search results automatically.