SERP (search engine results page)

A search engine results page is the document a search engine returns in response to a query: a mixture of paid placements, ranked organic links, and generated or extracted result types that answer the query in place. The acronym is universal in the trade and describes a surface, not an algorithm.

What the surface is made of

Three kinds of thing occupy a modern results page, and they behave differently:

• Ads. Bought placement, resolved by auction, independent of the organic index.
• Organic results. Ranked documents, each rendered as a title link, a URL, and a snippet.
• Documented result types. Google's Search Gallery documents each rich result type separately — Article, Breadcrumb, Carousel, Course list, Dataset, Discussion forum, Event, Job posting, Local business, Product, Q&A, Recipe, Review snippet, Video and others, a set Google adds to and retires from — each eligible only when the page emits the structured data that type requires. Eligibility is not entitlement: emitting the markup makes a page a candidate, nothing more.

Alongside these sit extracted and generated answers — featured snippets and AI Overviews — which take material from indexed pages and present it above or instead of the list.

Where the snippet text comes from

This is the part publishers most often misunderstand. Google states that snippets are "primarily created from the page content itself", and that it sometimes uses the meta description element when that would describe the page more accurately. The snippet is composed per query, from the page, by Google. You are not writing it.

What you can do is subtract. Google documents three directives for that:

All three remove; none dictates wording. Google also notes snippets are truncated "as needed, typically to fit the device width", so a fixed target character count is optimising against a value that is not fixed.

Why the page matters less as a destination

A results page that answers the query is a results page the user does not leave. A 2024 SparkToro and Datos study, drawn from a US and EU panel over September 2022 to May 2024, found that 58.5% of American Google searches resulted in zero clicks. That reframes what a position is worth: rank one on a query that produces no click is a placement on an impression, not on a visit. Zero-click search covers the consequence in full.

For anyone trying to be quoted rather than merely listed, the operative unit changes. A ranked result competes as a document. A snippet or an overview competes as a passage: a span of text that is correct when lifted out of its page and set beside text from three other sites. A qualifier sitting two paragraphs above a claim does not travel with the claim when that claim is extracted.

Failure modes

• Writing the meta description as though it were the snippet. It is one candidate input among several, chosen per query.
• Emitting markup for a type the page is not. Schema that misdescribes the content risks the spam policies rather than the rich result.
• Measuring position without measuring click share. On a query answered on the page, position moves and traffic does not.
• Optimising a snippet you have suppressed. data-nosnippet applied broadly, or a max-snippet cap set very low, quietly removes the page from the surfaces being optimised for.
• Treating an AI Overview as a ranked slot. It is a generated summary with attributions; there is no position in it to win, only a passage to be selected.

Frequently asked questions

Which rich result types does Google document?

Its Search Gallery documents each type separately — Article, Product, Recipe, Video and a couple of dozen more — each with its own structured-data requirements.

Do I write my own snippet?

No. Google composes it, primarily from page content, sometimes from the meta description.

What control do I have over snippets?

Three subtractive directives: nosnippet, max-snippet, and data-nosnippet.

Is an AI Overview on the SERP?

Yes, as a surface — but it summarises sources rather than ranking them.