Retargeting Measured Against A Holdout, Not An Attribution Window

Nothing meaningful. The words are used interchangeably. There is a loose convention that remarketing came from Google’s product naming and from email follow up, while retargeting meant display advertising. Nobody applies it consistently. If an agency tells you they are fundamentally different services, ask them to explain how.

Yes, and the panic was overdone in both directions. Google announced in April 2025 that Chrome would keep third party cookies, then shut down its replacement interfaces that October. Safari and Firefox have blocked them by default for years, so part of your audience was never reachable that way. Nothing about that changes the sensible strategy, which is to lean on lists you own.

They are real events and they are not proof. A view through conversion counts someone who saw an advert, did not click, and converted later. Nobody can tell you whether the advert caused it. On retargeting audiences, where most people were already engaged, the majority of these conversions would probably have happened anyway. We report them. They do not carry the argument.

By holding some of the audience back and showing them nothing. Whatever the advertised group does above the held back group is what retargeting added. It costs a little reach and it produces a number you can defend. Almost every account we look at has never done this, which is why the reported returns look so good.

Low, because the audiences are small. That is the appeal and also the trap. A small warm audience can absorb far more money than it should and keep reporting well. That is why capping and suppression matter more here than budget size. We would rather size it correctly than encourage you to spend more.

Caps set across platforms rather than inside each one, suppression of anyone who already converted, tighter membership windows, and creative rotation before the ads become wallpaper. Uncapped retargeting is the fastest way to make people dislike a brand they were otherwise fine with.

Google Ads, covering display, YouTube, and search remarketing lists, and Meta for Instagram and Facebook. Both are accounts you already own. Where a client runs paid social with us, the Meta side is planned inside that work so the two are not bidding against each other.

Yes, and small audiences are often the most valuable ones. The platforms enforce minimum audience sizes before a list can be used, so there is a floor. Below it, the answer is usually to widen the window slightly or to combine two related behaviours rather than to give up on the idea.

Adverts that show the specific products someone viewed, generated automatically from your product feed. It works well for ecommerce with a large catalogue and it is completely dependent on feed quality. A feed with wrong prices or missing images will produce adverts that actively cost you sales.

By uploading customer lists and excluding them, and by using purchase events to remove people automatically. Where the conversion happens off site, such as a phone call, we check it manually. Suppression is unglamorous and it is usually the single biggest saving available in a retargeting account.

As long as your sale actually takes, which is rarely the default. Something bought in two days does not need a thirty day window. A kitchen bought over three months needs longer than any default offers. We set the window from your data rather than from the platform suggestion.

It can, with care. The audiences are small, the cycles are long, and the risk of showing the same few people an advert hundreds of times is high. Done well it keeps you present through a long evaluation. Done carelessly it becomes an expensive way to irritate a buying committee.

Search remarketing lists live inside paid search and adjust bidding for people who already visited, which is a different mechanic from showing them a display advert. Both use the same audiences. When one lead runs both, the audiences get built once and used properly rather than duplicated with slightly different settings.

Yes. Komplex is based in Austin with a presence in New York City and Reykjavik, and this work happens remotely by nature. Campaigns across countries get separate audiences and separate suppression lists. A customer in one market should not be paying to be advertised to in another.