Retargeting · Remarketing
Retargeting / Remarketing
What is retargeting?
- Show ads again to visitors who left
- Warmer audience, higher conversion
- Cap frequency and duration to avoid ad fatigue
Adding retargeting changes how you look at your ad budget. Before, performance was judged by 'how many new people did we bring in this month.' Now you can also see how many of the people who already visited we brought all the way to a conversion. The audience shrinks to a fraction of a new-acquisition campaign, but even with a higher cost per click, the cost of generating one inquiry goes down.
In practice, the two are used separately. Retargeting uses visit behavior captured by pixels and tags placed on your site, while remarketing means uploading lists you already have, such as emails and transaction history stored in the CRM. If you don't split your segments, you only burn money — someone who read one blog post and left, someone who dropped off at the quote page, and someone who abandoned a demo request form halfway need entirely different messages. In B2B, though, audience size is the constraint: Meta needs a custom audience of about 1,000 and LinkedIn about 300 before delivery gets going. A company with fewer than 3,000 monthly visitors should extend the tracking window to 90–180 days instead of 30 to get ads to run at all.
What goes wrong most often in practice is taking retargeting results at face value. Under last-click attribution, retargeting appears several times more effective than new-acquisition ads, but that is an illusion: it counts people who would have come in anyway and were simply made to click one more time. If you cut the new-acquisition budget based on that number, the pool you would retarget dries up two or three months later and total inquiries fall with it. Exclusion settings are also easy to miss. If you don't exclude signed customers and job applicants, the contact at a client that has already adopted your product keeps seeing 'Inquire about adoption now' ads for two months, and you end up with a complaint email saying 'We signed with you ages ago, why is this still happening?'
John KimInstructor John Kim, author of B2B Marketing Design and CEO of Nanum Consulting
Euijung KimBrand strategist with 30 years in advertising, formerly a division head at Daehong CommunicationsIt went mainstream around 2010 as digital ad networks and cookie-based tracking matured. With recent cookie restrictions, it is shifting toward first-party data.
Here’s a hypothetical case: Company A, an industrial measuring-equipment maker with 140 employees and KRW 42 billion (≈ US$31,423,000) in annual revenue. Its website got 2,800 visits a month, but only 9 quote requests. Of the 380 people who reached the quote page, only 20 submitted the form, and the marketing director said, 'I have no idea where the other 360 went.'
- When the marketing director dug into the GA4 data, 62% of people who left the quote page had come back within three weeks. Concluding that 'they hadn't forgotten us, they just hadn't gotten approval yet,' the team started retargeting.
- Together with the agency, we split the audience into three groups: people who only viewed the product intro, people who left the quote page, and people who started a form and abandoned it. Each group got different creative, and we capped the campaign at a 90-day window and four impressions per week.
- For the quote-abandonment group, we skipped price and ran a case study on defect-detection improvements at three peer companies. The sales director's remark, 'Our customers fear shutting down their equipment more than they care about price,' became the creative guideline.
- In the second month, the quality manager at an existing client got in touch: 'We signed last year, so why am I seeing ads for adoption inquiries?' The team immediately added the 210 contracted accounts from the CRM, plus the list of job applicants, to the exclusion list.
- Four months later, monthly quote requests rose from 9 to 23, and 11 of them came through retargeting. Ad spend per inquiry fell from KRW 460,000 (≈ US$345) to KRW 190,000 (≈ US$140).