Google Ads remarketing is a method for showing ads again to users who have previously visited your site. Since these users are already familiar with the brand, conversion rates are generally higher compared to a cold audience.
Remarketing isn’t a single method. Standard remarketing, segment targeting used in search campaigns, and dynamic remarketing each address different needs. The right choice depends on the campaign type and how the product needs to be displayed.
Google Ads’ remarketing overview states that past visitors can be shown ads across more than 2 million sites and apps. The segment targeting documentation explains that this method, formerly known as RLSA, is now called “data segments,” and that segments can be applied at the campaign or ad group level. The dynamic remarketing documentation states that showing visitors ads featuring the products they saw on the site requires a product feed, and that this method can only be used in Display, Performance Max, and app campaigns.
How Does Standard Remarketing Work?
Standard remarketing is a method for showing ads to past visitors on the Display network. The user list is built through the Google Ads tag or GA4 audience export.
The list can be segmented by behavior
All visitors can be gathered into a single list, or product page visitors and cart abandoners can be set up as separate lists. The clearer the segmentation, the more targeted the ad message can be.
RLSA: Segment Targeting in Search Campaigns
RLSA (Remarketing Lists for Search Ads) is a method that uses a past visitor list as a targeting or bidding signal in search campaigns. Now officially called “data segments,” this mechanism isn’t limited to search — the same segment list can also be used in Display and Video campaigns. RLSA is simply its application within search campaigns.
There are two targeting modes
According to the segment targeting documentation, two modes exist: Observation mode, used to monitor performance, doesn’t restrict the ad and is therefore recommended for search campaigns. Targeting mode, on the other hand, shows the ad only to segment members; it may be more suitable for Video/Display campaigns, which already offer a wide inventory.
It applies at the campaign or ad group level
A segment is applied at either the campaign level or the ad group level, not both simultaneously. This choice determines how broad or narrow the targeting will be.
When Should Dynamic Remarketing Be Used?
Dynamic remarketing automatically shows a user the products they looked at on the site, within the ad itself. This method suits e-commerce and travel sites with a large product catalog.
A product feed is a prerequisite
For dynamic remarketing to work, a product feed (unique ID, image, price) is required. This creates a data source requirement similar to the structure found in Merchant Center.
It only works in certain campaign types
Dynamic remarketing can only be used in Display, Performance Max, and app campaigns; this method doesn’t exist in search campaigns.
Audience List Strategy
List strategy requires different duration and segmentation depending on user intent.
Duration should be set according to intent
A short-duration list (7 days) may be more suitable for a user who abandoned their cart, while a longer-duration list (30-90 days) may suit a general product page visitor better.
Expansion with similar audiences is possible
Existing remarketing lists can also be used as a source audience to reach new users showing similar behavior.
Pre-Launch Checklist
Before a remarketing campaign goes live:
- Is the list size sufficient for the relevant campaign type?
- Does the segment targeting mode (Observation/Targeting) fit the campaign’s goal?
- If dynamic remarketing is used, is the product feed up to date?
- Does the list duration match the product’s actual decision cycle?
A Common Mistake
The most common mistake is gathering all visitors into a single list and showing everyone the same message. A user who abandoned their cart and a user who only visited the homepage don’t carry the same intent; approaching both with the same ad can lower the conversion rate.
Summary
Remarketing works in three different forms: standard Display targeting, segment targeting in search campaigns (RLSA), and product-based dynamic remarketing. The right choice depends on the campaign type and how the product needs to be displayed. List segmentation and duration settings directly affect remarketing performance.