What is paid search in marketing?

Paid search is advertising that appears on a search engine's results page, where advertisers pay per click (or occasionally per impression) to show up for specific search queries — Google Ads and Bing Ads are the main platforms.

What's the difference between paid search and organic search?

Organic search results are unpaid, ranked by relevance and authority. Paid search results are bought placements from an ad auction, and the advertiser pays per click. GA4 tracks them as separate channels using the session medium.

Is paid search the same as paid social?

No. Paid search ads appear on search results in response to a query, targeting active intent. Paid social ads appear in a social feed, targeting people based on interests or behavior rather than an active search.

How does GA4 know traffic is paid search?

GA4 checks the session's medium value — cpc, ppc, or similar — against a recognized search-engine source. Google Ads traffic is usually auto-tagged; other paid search platforms may need manual UTM tagging with utm_medium=cpc.

What Is Paid Search?

Paid search is traffic from ads you pay for on a search engine's results page — a Google Ads or Bing Ads text ad that appears above or alongside organic results when someone searches a relevant term. It's distinct from organic search (unpaid results ranked by relevance) and paid social (paid ads on platforms like Instagram or LinkedIn). GA4 identifies paid search traffic mainly through the cpc or ppc medium value attached to the session.

Paid search vs. organic search

Organic search results are ranked by the search engine's algorithm based on relevance and authority — you don't pay to appear there, and getting a click doesn't cost you anything per visitor. Paid search results are auction-based placements: advertisers bid on keywords, and Google or Bing charges per click (hence "cost per click," or CPC) when someone clicks the ad.

Both can appear on the same results page for the same query, often within the same few inches of screen space, but they're fundamentally different in GA4: organic search traffic gets the medium value "organic," while paid search gets "cpc" or "ppc." A page can rank well organically and also run paid ads for the same term — the two aren't mutually exclusive, and GA4 tracks them as separate channels even when they're driving traffic to the same landing page.

Paid search vs. paid social

Paid search ads appear on search results pages in response to a search query — the person is actively looking for something. Paid social ads appear inside a social platform's feed or stories, interrupting a scroll rather than answering a search — the person wasn't necessarily looking for anything related.

This distinction matters for how you read performance. Paid search traffic tends to convert at a different rate than paid social, largely because of intent: someone searching "buy running shoes" has different intent than someone scrolling Instagram who gets served a running shoe ad. Lumping the two together under a generic "paid" bucket hides that difference.

How GA4 buckets paid search

GA4's default channel grouping classifies a session as Paid Search when the session_medium is cpc, ppc, paidsearch, or a similar recognized paid value, combined with a source GA4 recognizes as a search engine (google, bing, yahoo, and others).

For Google Ads specifically, GA4 usually gets this automatically through auto-tagging (the gclid parameter) and the Google Ads integration, without you needing to manually add UTM parameters. For Bing Ads or other paid search platforms without a native GA4 integration, manually tagging links with utm_medium=cpc (or ppc) is what tells GA4 to classify that traffic correctly instead of letting it fall into Referral or Direct.

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FAQ

What is paid search in marketing?: Paid search is advertising that appears on a search engine's results page, where advertisers pay per click (or occasionally per impression) to show up for specific search queries — Google Ads and Bing Ads are the main platforms.
What's the difference between paid search and organic search?: Organic search results are unpaid, ranked by relevance and authority. Paid search results are bought placements from an ad auction, and the advertiser pays per click. GA4 tracks them as separate channels using the session medium.
Is paid search the same as paid social?: No. Paid search ads appear on search results in response to a query, targeting active intent. Paid social ads appear in a social feed, targeting people based on interests or behavior rather than an active search.
How does GA4 know traffic is paid search?: GA4 checks the session's medium value — cpc, ppc, or similar — against a recognized search-engine source. Google Ads traffic is usually auto-tagged; other paid search platforms may need manual UTM tagging with utm_medium=cpc.

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What Is Paid Search?

Paid search vs. organic search

Paid search vs. paid social

How GA4 buckets paid search

FAQ

If you're here because GA4 is confusing — that's why we built Gizmo.

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