Campaign KPIs That Matter (and the Ones That Distract You)
A practical guide to choosing campaign KPIs that help you make better decisions instead of filling reports with numbers that look impressive but say very little.
Table of contents
- Start with the job of the campaign
- Outcome metrics vs. diagnostic metrics
- A simple example
- The problem with vanity metrics
- Build a KPI stack
- Don't let the advertising platform choose your KPIs
- Watch for KPIs that fight each other
- Your KPI list should change when the question changes
- The five-question KPI test
- What I'd put on a simple campaign scorecard
- What to do next
One of the easiest ways to make a marketing report look sophisticated is to put a lot of numbers in it.
Impressions. Clicks. CTR. CPC. CPM. Sessions. Engagement rate. Conversions. ROAS. Revenue. Frequency. Cost per lead.
Before long, you've got a dashboard that looks impressive and answers almost nothing.
I've managed enough campaigns over the years to know that the problem usually isn't a lack of data. It's deciding which numbers deserve your attention right now.
A useful KPI should help you answer one of two questions:
- Did the campaign accomplish its job?
- If not, where is the problem?
Everything else is supporting detail.
Start with the job of the campaign
Before choosing KPIs, go back to the campaign objective.
If the campaign exists to generate qualified leads, then qualified leads are closer to the truth than impressions.
If the goal is ecommerce sales, revenue and acquisition cost probably matter more than click-through rate.
If you're trying to introduce a new brand to a market, reach and frequency may deserve more attention than they would in a direct-response campaign.
This is why I don't like universal KPI lists.
The same metric can be extremely important in one campaign and nearly meaningless in another.
The question isn't, “Is CTR a good KPI?”
The better question is, “Does CTR help me understand whether this campaign is doing its job?”
Outcome metrics vs. diagnostic metrics
I like splitting campaign metrics into two buckets.
Outcome metrics
These tell you whether the business result happened.
Depending on the campaign, that might include:
- qualified leads
- booked appointments
- purchases
- revenue
- new customers
- trial activations
- customer acquisition cost
- return on investment
These are usually the metrics I want near the top of the report.
Diagnostic metrics
These help explain why the outcome moved.
Examples include:
- impressions
- reach
- CTR
- CPC
- CPM
- landing-page conversion rate
- frequency
- engagement
- bounce or abandonment behavior
Diagnostic metrics are valuable. They just shouldn't automatically outrank the outcome.
A campaign can have a fantastic CTR and still be a terrible business decision.
A simple example
Let's say a paid search campaign spends $2,000 and produces:
- 40,000 impressions
- 2,000 clicks
- 100 leads
- 30 qualified leads
- 8 customers
- $16,000 in revenue
You could build a report around all six numbers.
But I'd start with the campaign's job.
If the goal was customer acquisition, I want to know:
How many customers did we acquire?
Eight.
What did they cost?
$250 each.
What revenue did they produce?
$16,000.
Now the supporting metrics become useful.
CTR tells us something about how well the ads attracted clicks.
CPC tells us what traffic cost.
Lead conversion rate tells us how well the landing experience converted those visits.
Qualified-lead rate tells us whether the campaign was attracting the right people.
Those numbers help explain the result. They aren't the result.
The problem with vanity metrics
“Vanity metric” gets thrown around a lot, sometimes unfairly.
Impressions aren't automatically vanity.
Clicks aren't automatically vanity.
Followers aren't automatically vanity.
A metric becomes vanity when it's presented as evidence of success without a meaningful connection to the campaign objective.
If you're running an awareness campaign, impressions may be completely legitimate.
If you're running a lead campaign and the report celebrates 900,000 impressions while qualified leads are falling, we've got a problem.
The metric isn't bad.
The way it's being used is.
Build a KPI stack
Instead of a giant dashboard, I like a simple stack.
1. Primary outcome
What is the one number closest to the campaign's business objective?
For example:
Qualified leads
2. Efficiency metric
What did it cost to produce the outcome?
For example:
Cost per qualified lead
3. Value metric
What was the result worth?
For example:
Revenue generated
4. Diagnostic metrics
Which two or three numbers help explain performance?
For example:
- CTR
- CPC
- landing-page conversion rate
That's already enough to have a useful conversation.
You can always drill into more detail when something looks wrong.
Don't let the advertising platform choose your KPIs
Ad platforms naturally emphasize the metrics they can see well.
That doesn't mean those are the metrics your business should optimize around.
A platform may know that it generated 120 form submissions.
Your sales team may know that 90 of them were junk.
That's a very different campaign story.
This is why downstream business data matters so much.
If you can connect marketing activity to qualified leads, customers, revenue, or margin, your reporting becomes much harder to fool.
The CAC Calculator, ROAS Calculator, and ROI Calculator can help connect campaign activity to business economics.
Watch for KPIs that fight each other
Sometimes one metric improves while the campaign gets worse.
Lower CPC sounds good.
But what if the cheaper traffic converts terribly?
Higher CTR sounds good.
But what if the ad copy is attracting curiosity instead of buyers?
More leads sound good.
But what if lead quality collapses?
This is why I'd never optimize a campaign around one diagnostic metric in isolation.
The numbers need context.
Your KPI list should change when the question changes
At launch, you may care about whether traffic is arriving and tracking works.
A week later, you may care about conversion rate.
Once enough leads exist, you may care about qualification.
Later, the bigger question may be customer acquisition cost or return.
That's normal.
A campaign report isn't a permanent museum display. It should reflect the decisions you're actually trying to make.
The five-question KPI test
Before putting a metric on the main campaign scorecard, ask:
- What question does this number answer?
- Is it tied to the campaign objective?
- If it changes, do we know what we'd investigate?
- Is the data reliable enough to act on?
- Does another metric give us a better view of the same issue?
If you can't answer those questions, the metric may still be useful somewhere in the report.
It probably doesn't need top billing.
What I'd put on a simple campaign scorecard
For many campaigns, I'd start with something like this:
Primary outcome
Qualified leads, customers, purchases, or another meaningful conversion.
Cost
Total spend and cost per primary outcome.
Value
Revenue, conversion value, or another measure of business impact.
Conversion efficiency
Conversion rate.
One or two diagnostic metrics
CTR, CPC, CPM, frequency, or another channel-specific measure.
That's it.
You can build ten more tabs later if somebody truly needs them.
What to do next
If you're building a campaign from scratch, start with the Campaign Builder and define the objective before you define the KPI list.
If the campaign is already live, use the Campaign Optimization Guide to diagnose where performance is breaking down.
And if your reporting still feels messy, go back to the simplest question:
What is this campaign supposed to accomplish?
Your best KPI usually sits very close to that answer.
Frequently asked questions
What is a campaign KPI?
A campaign KPI is a measurable indicator used to judge whether a marketing campaign is achieving its primary objective or to help explain why performance changed.
How many KPIs should a campaign track?
There is no universal number, but most campaign scorecards are more useful when they focus on a small set of outcome and diagnostic metrics rather than every number a platform can report.
Are impressions and clicks KPIs?
They can be useful diagnostic metrics, but whether they qualify as key performance indicators depends on the campaign objective. For a sales campaign, revenue and acquisition cost are usually closer to the business outcome.