Search Intent
Search intent is what a person actually wants when they type a query into Google. Google has spent years learning to serve it, which is why matching intent matters far more than matching keywords when deciding what a page should contain.
Why it matters for your rankings
Intent is the reason a technically perfect page can fail completely. If searchers want a comparison table and you published a narrative essay, no amount of on-page work closes that gap.
It also shifts over time. A query that once returned guides may now return product pages because buying behaviour changed, and pages that ranked for years quietly slide as the results page reformats around them. Reading intent is not guesswork: Google shows you the answer in what it already ranks. The discipline is checking that before writing rather than after, and re-checking it when a page that used to perform starts declining without any obvious cause.
How to check it on your site
Read the first page of results
Note the dominant format, depth and angle. That is Google's published verdict on intent for that query.
Classify before you write
Decide whether the query is informational, navigational, commercial or transactional, and match the page type to it.
Re-check declining pages
A page losing rankings without other explanation often lost an intent shift rather than a quality contest.
Do not fight the format
If every result is a listicle, publishing a case study will not win the query regardless of quality.