Dynamic Search Ads (DSAs) are a Google Ads campaign type where Google automatically generates headlines and selects landing pages based on the content of your website, rather than you providing keywords and writing ads manually. They're a legitimate and useful tool when applied correctly, but they're also frequently misused, deployed without proper controls, and left to run without the monitoring they require.
Understanding what DSAs actually do, when they're appropriate, and how to structure them correctly is worth the time for any business running search campaigns with a meaningful number of pages or product types.
How Dynamic Search Ads generate ads
When you set up a DSA campaign, you direct Google to crawl either your entire website or specific pages. Google indexes the content, page titles, headings, body copy, and uses it to match your ads to relevant searches.
When someone searches a query Google considers relevant to your website content, it automatically generates an ad headline drawn from the page it considers most relevant. You write the descriptions; Google supplies the headline and determines the landing page.
The destination URL is matched dynamically. Google picks the page it thinks best fits the search query. If someone searches "emergency boiler repair Wrexham" and you have a page about emergency boiler services, Google might send them there. If your site structure is unclear or your pages are thin on content, Google's matching is correspondingly less accurate.
Why DSAs are useful
The main value of DSAs is coverage: they can capture relevant searches that your manually built keyword campaigns are missing, particularly long-tail queries with low individual volume that you wouldn't think to bid on directly.
A business with a well-structured website covering many service types or product categories can use DSAs to pick up the long-tail traffic around those areas without building out dozens of tightly specified ad groups. An e-commerce retailer with hundreds of products can use DSAs alongside Shopping campaigns to capture text search queries that Shopping doesn't cover.
DSAs are also useful as a research tool. Running a DSA campaign for a period alongside your existing campaigns and reviewing which search queries convert allows you to identify terms worth adding to your standard campaigns as explicit keywords. For North Wales businesses with service pages covering multiple towns or areas, DSAs can surface hyperlocal search queries you wouldn't have thought to bid on directly. Before going that route though, make sure your standard campaigns already have a solid negative keyword strategy in place, as DSA campaigns without negatives produce a significantly wider range of irrelevant queries than standard campaigns.
When DSAs are not appropriate
DSAs need good website content to function well. If your site has thin pages, poorly written product descriptions, or unclear page titles, the headlines Google generates will reflect that. An auto-generated headline from a weak page title is often worse than no ad at all.
They're also not suitable for accounts where control over messaging is critical: legal services, regulated financial products, or businesses with very precise value propositions where the exact wording matters. Standard responsive search ads give you control over what appears; DSAs do not.
Targeting options: website vs. page feed
When setting up a DSA campaign, you choose the targeting source. The broadest option is all webpages: Google crawls your entire site and uses any page as a potential match and landing page. This is also the most likely to include irrelevant pages like privacy policy, checkout pages, or blog posts that shouldn't receive paid traffic.
A better approach for most accounts is targeting specific pages. You specify which pages Google can use, either by URL, page title, page content, or category. For most accounts, targeting specific page categories (products, services, key landing pages) and explicitly excluding pages that shouldn't receive paid traffic is the right call.
The most controlled option is page feeds, a structured data file uploaded in Google Ads that lists specific page URLs you want to target. This is most useful for accounts with many pages where you need precise control over which pages DSAs can use as landing destinations.
Adding negative keywords is essential
Because DSAs match based on page content rather than specific keywords you've chosen, they require aggressive negative keyword management. Without it, DSAs will show for searches that are vaguely related to your site content but have no conversion potential.
Add your standard negative keyword list to DSA campaigns immediately on setup. Review the search terms report at least weekly. DSA campaigns typically surface a wider range of irrelevant queries than standard campaigns, particularly in the early weeks. Build your DSA negative keyword list separately from your standard campaign negatives, as the irrelevant terms will be different.
How DSAs fit with standard search campaigns
DSAs should supplement standard campaigns, not replace them. Standard campaigns with tight ad groups handle your core terms and services, giving you control over keywords, ad copy, and landing pages. DSA campaigns then target content areas your standard campaigns don't explicitly cover, with negative keywords matching your standard campaign keywords to prevent overlap.
The overlap issue is important: if a search query is covered by both a standard campaign keyword and a DSA target, Google will generally prioritise the standard campaign (if eligible). But add your key standard campaign keywords as negatives in your DSA campaigns anyway to keep the data clean and the attribution clear. If you're evaluating whether DSAs fit your wider campaign structure, the ongoing optimisation framework for Google Ads covers how different campaign types should be reviewed alongside each other on a monthly basis.
Reviewing DSA performance
Check which pages are generating traffic in your DSA campaign by viewing the "Search term" and "Targeting" reports. The targeting report shows which of your pages (or page categories) are driving impressions, clicks, and conversions. Pages generating clicks without conversions may need review: either the page content is attracting the wrong queries or the page itself isn't converting the traffic it receives.
Auto targets with low conversion rates over a 60-day window (and meaningful spend) are candidates for exclusion, either at the page level or by refining your targeting categories.
Google Ads management in North Wales: if you'd like help setting up or reviewing Dynamic Search Ads as part of your wider campaign strategy, get in touch.
