Search Intent
Why the same words can call for a different page.
Also known as user intent, query intent
The underlying goal behind a search query ... informational, navigational, commercial, or transactional ... that determines what type of content Google surfaces and what type of page can realistically rank.
What it means in the system.
Search intent is the reason a user typed a query. Google categorizes most queries into four intent types: informational (seeking to learn), navigational (seeking a specific site or resource), commercial (researching before a purchase decision), and transactional (ready to buy or act).
Intent alignment is a prerequisite for ranking. A page optimized for 'best omega-3 supplements' (commercial intent ... comparison, reviews, recommendations) will not rank for 'how does omega-3 work' (informational intent ... explanation, education) even if it mentions the mechanism. Google's results pages are themselves signals: looking at what ranks for a query tells you exactly what intent Google has inferred.
For content strategy, intent mapping ensures that each page in a cluster targets the right type of content for the query it's chasing. For acquisition evaluation, reviewing the intent distribution of a site's traffic reveals whether the content is positioned to convert (commercial + transactional queries) or primarily to inform (informational queries) ... which has direct implications for monetization model.
Where it shows up.
A site ranking primarily for informational queries like 'what is magnesium good for' and 'symptoms of magnesium deficiency' will monetize well through display advertising (high informational traffic volume). The same site may need additional commercial-intent content ('best magnesium supplement', 'magnesium glycinate vs oxide') to earn affiliate revenue at any real scale. Intent distribution determines the monetization ceiling.
Intent varies within a category. 'Best running shoes' is commercial intent but skews toward comparison content, not direct sales pages. 'Nike Air Zoom Pegasus 40' is still commercial but closer to transactional ... users are researching a specific product. Matching the category is the start. Matching the finer shade of intent inside it is what separates content that ranks from content that sits on page 3.