Key Takeaways:
- Five audiences can be 80% the same people, and your dashboard will still report five successful campaigns, because overlap is invisible from inside a buying platform.
- A five-step audit turns “acquisition is flat and I don’t know why” into a specific, dollar-quantified number you can act on and prove reduction against.
- The fix is finding out how much of your current spend is paying to reach the same people twice, then redirecting that specific dollar amount to net-new reach.
Effective media spend has a lot of benefits you may not think about on a regular basis:
- It gives you a clearer read on what’s actually working. This also improves downstream decisions.
- It lowers the real cost of acquiring each new customer because you’re not paying to reach the same people multiple times across overlapping audiences.
- It reduces the ad fatigue that comes with showing the same audiences the same or similar campaigns too many times. This helps to ensure that your customers and prospects remain engaged.
- The ability to redirect spend toward net-new audiences expands your reach without requiring an increase in the media budget itself.
- Spending your budget more effectively and driving stronger results puts in you a better position to secure continued investment in your team.
With all of this in mind, you now need to ask yourself a question: Where am I currently wasting media spend? The answer is in places where your audiences overlap. Often, these get missed because buying platforms simply report performance on an audience-by-audience basis.
They don’t tell you, for instance, that 70% of Audiences A and C are made up of the same people. To figure out where you’re targeting the same people over and over, you need to look at the actual individuals that you’ve segmented into audiences.
In this blog, we’ll go through a simple, five-step audit that will help you take a look at the inner workings of your media strategy and nip wasted budget in the bud.
How to audit your media strategy
Step 1: Inventory each live audience you’re spending money on
Create a full list of each of the audience segments that are currently receiving budget. Take the time to note how the audience was built, whether it was based on an interest category, a retargeting pool, a demographic filter, or something else. Be specific about the logic behind each build. Your notes should say things like, “We built this as a lookalike audience based on our top 10,000 customers” or “We built this using a demographic filter of ages 25-35 with a similar interest overlay.” You’re doing this to make Step 2 easier.
Step 2: Measure overlap at the individual-person level
It’s time to check: How many specific people appear in more than one audience? Let’s say you have Audience A, made up of people ages 25-45 who are interested in cooking. And then you have Audience B, made up of customers ages 35-45 who bought more than $1,000 worth of cooking items in the last year. Look again: Both those audiences contain all or part of the same age group. You’re spending money to target them twice. Check all of the audiences in current and future campaigns to find out how many overlaps you have.
Step 3: Quantify wasted spend
Now, figure out how much media spend you’re wasting. Take the overlap percentage from Step 2 and apply it against the actual spend behind each audience to calculate how much budget is going toward reaching people who were already being reached by another line item in your plan.
This is the baseline you’ll use to make sure you’re making your spend more efficient later. It’s also a hard number you can bring to your team leads to get their buy-in to redirect your budget and reorient your strategy.
Step 4: Reduce, reuse, and rebuild
Some of your audiences will be free from overlap; these you can set aside and keep as they are. The others should be rebuilt around different attributes rather than solely those available in your first-party data. By focusing on things like personal values, motivations, future behaviors, and preferences, you’ll be able to create new, hyper-specific audiences that not only don’t overlap, but that also allow your team to more effectively engage the customers because your tactics will reflect a better, deeper understanding of the individuals you’re trying to reach.
Step 5: Suppress and reallocate
Audiences that are particularly saturated shouldn’t get thrown out. They’ll be useful as a suppression list. Apply any you have against your new prospecting audiences so spend stops flowing to people you’ve already reached repeatedly. Redirect the dollar amount you quantified in Step 3 towards that net-new reach instead. Then, keep auditing and measuring on a regular cadence to ensure your new approach is working.
Ready to find out how much of your media budget is being spent twice?
Before you ask for more media spend, find out how much of your current spend is already being wasted on the same people.
The Resonate Ignite Platform can resolve audiences down to the individual level to make overlap visible. It also empowers you to segment customers based on predictive insights like intent, personal values, and motivations. As a result, your media spend will be effectively allocated among audiences that are truly differentiated so you can better optimize campaigns and keep customer acquisition costs down. Ready to talk about how Resonate will expand your reach? Schedule a consultation with a data expert today.
Frequently Asked Questions
How much audience overlap is normal?
There’s no universal benchmark, since it depends heavily on how audiences were built and how narrow the targeting is. The point of this audit isn’t to hit a specific number; it’s to find out your actual overlap rather than assuming it’s low because each individual audience performs well.
Does fixing overlap mean reducing our overall media spend?
No. The goal is reallocating spend that’s currently going to redundant impressions toward net-new reach, not cutting the budget itself.
How is this different from simply narrowing our existing audience definitions?
Narrowing an existing audience still starts from the same resemblance-based logic that created the overlap in the first place. Step 4 rebuilds the prospecting audience around a different signal entirely (shared motivation rather than shared demographics or lookalike similarity), which is what actually avoids recreating the overlap under a new name.
What should we expect to see after applying suppression and reallocating spend?
A lower redundant-impression rate and improved new-customer acquisition efficiency, since the same budget is reaching more distinct people. This audit is focused on reach and acquisition efficiency specifically, not a full revenue or ROAS claim, since that depends on the broader rebuild work beyond this audit alone.
