How targeted advertising cuts wasted ad spend across display, online video and CTV

Every display, online video or connected TV (CTV) impression that reaches the wrong person is budget you won't get back. So is the fifth, sixth and seventh impression that reaches the same person on the same day. Targeted advertising cuts that waste by deciding who should see your ads and where they run.

This guide covers what wasted ad spend looks like, how to narrow your audiences and control frequency, and how to put the budget you save to better use.

What causes wasted ad spend in display, online video and CTV?

Wasted ad spend is media budget that reaches people who were never likely to buy, or reaches likely buyers so often that extra impressions stop changing their behaviour. In digital campaigns it usually comes from four places:

• Channel-first buying. When display, online video and connected TV are planned and bought separately, one person can be counted as several unique viewers and served by every channel.
• Fragmented frequency capping. Caps set per channel or per device can't see that the same person has already met your ad on their laptop, phone and TV, so each platform keeps serving impressions the others have already delivered.
• Broad audiences. Device-level or loosely defined segments include large numbers of people with no interest in what you sell.
• Proxy measurement. Optimising to clicks or video completion rates tells you an ad was seen, not whether it led to a sale.

Where do I start with advertising efficiency?

Start with your first-party data: current customers, lapsed buyers and prospects who resemble your best customers.

The next step is linking those people to the devices and households where your ads actually appear, and this is where most plans run into trouble. Your CRM holds names, email addresses and postcodes, while ad platforms see cookies, mobile ad IDs and TV IP addresses that change often and rarely match each other.

Closing that gap needs an identity solution: a persistent, privacy-compliant way of recognising the same person across browsers, apps and the shared household TV. Without one, frequency caps, sequencing and sales measurement all rely on each channel's partial view of the audience, which is how most of the waste described above happens.

If you're comparing options, it's worth asking how the identity data is built and kept up to date, how it links individuals to a household TV, and whether it can connect ad exposure to offline sales as well as online ones.

Epsilon Digital has its own identity solution, CORE Identity, at the centre of the platform, so connected TV, online video and display all work from the same view of real people.

Efficient cross-channel activation

With a consistent view of each person across every screen, there are four practical ways to cut waste and put the budget to better use.

1. Cap frequency per person. Ad frequency capping only protects budget when it works across channels. Set one cap for each individual rather than separate caps for each platform.
2. Sequence your message across screens. Use CTV to introduce the brand, then follow up with online video and display ads that move people towards purchase. A cross-channel plan avoids showing the same ad everywhere at once.
3. Measure against sales. Link media exposure to online and in-store transactions so you can see what each touchpoint contributed. Completion rates and clicks are signals, not outcomes.
4. Reinvest what you save. Budget recovered from over-frequency can fund reach into new, in-market prospects. After each campaign, check how much spend moved from repeat impressions to new prospects and what each new customer cost, so you know the gains are real before you repeat them.

Discover Epsilon Digital

If your display, online video and CTV budgets are still planned and measured separately, some of the waste described above is probably already sitting in your plan. Epsilon Digital runs all three channels from one platform, with frequency controlled per person and results measured against online and in-store purchases rather than clicks or completion rates.

Find out more about Epsilon Digital and book a 30-minute consultation with the Epsilon team.

There's no pitch deck or obligation, just a conversation about how a connected, cross-channel approach could improve your reach efficiency and where you'd see the most impact.