Search ads vs display ads: the difference and which to choose
These aren't rivals for the same budget — they're tools for different stages of the funnel. Mixing them into one campaign is a common way to waste money.
Different user intent
Search ads show against a direct query — the person has already formed a need and is looking for a solution. Display ads on the Google Display Network show on partner sites and apps to people currently reading news or watching video who never searched for you.
That difference drives everything else: search conversion is usually higher because demand already exists, while GDN operates earlier — brand familiarity and reminder rather than an immediate sale.
The mistake is judging GDN by the same metrics as search. Click price on the network is usually a fraction of search, but so is lead conversion, and comparing raw CPA without adjusting for the channel's job is meaningless.
Formats and placements
Search ads are text ads in Google results alongside organic listings. Display ads are banners of varying sizes that automatically adapt to the placement across the Google Display Network — news sites, apps, YouTube bumpers.
GDN reaches millions of sites and apps, including ones the local audience uses daily, from news portals to weather apps. That's enormous reach, but also enormous irrelevant impression volume without proper targeting.
Unlike search, where you compete for a specific query, GDN competes for showing to a specific audience or site theme — a different targeting approach: interests, topics, remarketing rather than keywords.
When GDN earns its place
Remarketing is the main working scenario for GDN for most businesses: chasing people who already visited the site with banners is cheap and converts noticeably better than cold interest-based impressions.
Launching a new brand or product nobody searches for directly yet also justifies GDN — there's no search demand for something that doesn't exist in people's minds, and display builds the awareness that search later capitalises on.
For narrow B2B services with thin demand, GDN often disappoints: interest audiences are too broad, and precise thematic placements for the niche may simply not exist in sufficient volume.
Placement quality on GDN
Without manual pruning, the GDN placement list can fill with low-quality mobile apps and sites generating accidental clicks. Check the placement report regularly and exclude non-converting sites once enough data accumulates.
Set content category exclusions up front: kids' game apps, adult sites — a standard exclusion list for almost any business unless that's actually the target audience.
Split display campaigns from search from the start — a shared budget almost always drifts toward the network, since clicks there are cheaper and the optimisation algorithm maximises volume, not lead quality.
A practical budget split
For most local businesses starting out, it's sensible to send 70-80% of budget to search, where direct demand is formed, and 20-30% to GDN for remarketing and awareness reach.
Adjust the ratio as the business grows: a company with a steady flow of search leads and an accumulated remarketing base can afford more display reach to strengthen the brand.
Don't launch GDN before search — without a baseline flow of search conversions, there's no remarketing audience for GDN to draw from.