Marketing data agency
We translate your data into clear insights and strategic decisions, so every choice is backed by the numbers that genuinely matter.
Tanguy De Keyzer Founder & digital strategist Last updated: 28 September 2026
Trusted by growing brands
Sound familiar?
We have data, but no clear insights.
I don't know which numbers actually matter.
Our tracking is off, so I don't trust our reports.
Every tool shows different numbers and I don't know which is right.
How we help
We set up your tracking correctly and translate your data into clear dashboards and decisions that drive growth.
Why Customer Impact
Without correct measurement you are steering blind. We lay a foundation you can rely on.
No overloaded reports, but clear dashboards that show what matters.
We translate data into concrete actions, not numbers for numbers' sake.
We measure correctly and in line with privacy rules, with consent properly handled.
About Customer Impact
Customer Impact is a digital marketing agency founded by Tanguy De Keyzer. For more than 10 years we have been building the growth engine of startups, scale-ups and established companies.
For us, data is the foundation under everything: correct tracking and clear dashboards that drive your decisions, not numbers for numbers' sake.
What we stand for:
What we do
We translate your goals into the metrics that matter and build visual reporting that resonates with your teams.
Coherent, full-funnel strategies across all your performance channels to create real impact.
We let the data set the strategy and give you an action plan that steers toward the most growth.
Using your reports, we analyze what works and tell the story behind the numbers.
We configure tracking and pixels correctly and implement them for your key platforms and tools.
We tailor an optimal attribution model based on your business, technology and goals.
Our process
We define which goals and events you really want to measure.
We set up the tracking correctly, from analytics to conversions.
We build clear dashboards around your most important KPIs.
We translate the data into concrete recommendations to act on.
We follow up and refine your measurement setup as you grow.
Once we have set goals and understand how your internal teams work with data, we help you visualize the numbers through dashboards and presentations that are clear to the whole company. First we align on the right attribution model; then we let the data set the strategy.
You get an action plan where the numbers tell us which direction delivers the most growth. No gut feeling, but well-founded decisions.
Good reporting doesn’t start with a dashboard, but with reliable measurement. Our method in four steps:
Most reporting problems aren’t caused by a lack of data, but by data you can’t trust. Double-counted conversions, a misconfigured GA4, or campaigns without UTM tagging: it renders every report useless. We fix that foundation first, with correct tagging, clean conversion measurement and an attribution model that matches how your customers decide.
Only when the measurement is right do the numbers start working for you. Then you see not just what is happening, but why, and what you can do about it. Does your measurement need to be (re)built first, with GA4, Google Tag Manager, server-side tagging, Consent Mode v2 or offline conversions from your CRM? We do that through our tracking specialist service. Not sure whether your current tracking is right? Start with a tracking audit.
Reporting isn’t a standalone service; it’s the engine under all your channels. Only when you know which campaigns produce leads and revenue can you shift budget to what works. Our data directly feeds your SEO, your Google Ads and your broader paid advertising strategy, and makes your conversion rate optimization (CRO) and marketing automation measurable instead of guesswork.
You stop working with six separate reports and start working with one clear picture that backs every marketing decision.
Data-driven reporting works for companies that want to stop deciding on gut feeling and start steering on numbers that are right, in B2B and B2C alike. Whether you want to fix your tracking or take your entire reporting to the next level: we start from your goal and work back to the data that gets you there.
Ready to put your numbers to work? Contact us and within 24 hours you’ll hear where your biggest opportunities lie.
Without reliable measurement, every marketing decision is a gamble. So we fix the tracking first, because only when your numbers are right can you shift budget precisely toward what actually drives revenue.
Tanguy De Keyzer Founder of Customer Impact and digital strategist No empty promises. This is what clients say about working with Customer Impact.
“I have been working with Customer Impact for a while now and it has been a breath of fresh air from the very start. The team complements itself perfectly, so you always have someone with very extensive knowledge of specific aspects of marketing, ranging from ads to web design and strategy. The hands-on approach means you can always get started right away, and the feedback is always clear and honest. No nonsense, just facts.”
Axel D.S.
Verified review via Google
“Customer Impact built a strong new website for us and set up a lead generation approach that truly delivers results.”
Janitor Waterschoot
Verified review via Google
“They do not just execute, they also think along strategically. Real B2B specialists. Recommended!”
Jack Daly
Verified review via Google
“Sharp and fast analysis of the problem, processes and possibilities. No complicated sales talk, fast, and a first setup that works well. A bit more attention to the fine tuning. Pleasant collaboration.”
Tandarts.nl
Verified review via Google
“Smooth communication, proactive thinking and everything neatly followed up.”
Claire Farrell
Verified review via Google
“Super professional and extremely creative! They managed to adjust and respond to all of our needs numerous times. Highly recommend ❤️”
Jovana Vakic
Verified review via Google
Compare your options
| Customer Impact | Large agency | Freelancer | In-house | |
|---|---|---|---|---|
| Starting point | Fix the tracking first | Often dashboards right away | Often one tool | Depends on your team |
| Sources | GA4, Tag Manager, ad platforms and CRM together | Varies | Usually one or two | Depends on your tools |
| Steering on | Decisions about leads and revenue | Often reports per channel | Often the technical setup | Depends on goals |
| Link with your channels | Feeds SEO, Google Ads and CRO directly | Often a separate team | Rarely | Possible, if there is time |
| Response time | Reply within 24 hours on working days | Via an account manager | Depends on availability | Immediate |
These are typical traits per type of partner, not statements about specific agencies.
What to expect
Week 1
We check your existing tracking, tags and reports and track down wrong or missing measurements.
Week 2 to 3
We set up GA4, Google Tag Manager, conversion tracking and the right attribution model correctly.
Week 3 to 4
A correct tracking and dashboard setup is usually in place within 2 to 4 weeks.
Month 2
We translate the numbers into concrete recommendations to shift budget to what works.
Month 3 onwards
As more data comes in, the insights get stronger and we refine the measurement setup.
Case studies
Kaizo, a B2B SaaS company, wanted to know why inbound had stalled. We put paid and organic traffic side by side: in September 2025, 38,743 paid sessions led to 48 key events (0.12%), while 2,292 organic sessions delivered 105 key events (4.6%). Key events are buying signals, not booked demos.
Tryve wanted one dashboard for paid and organic to see what really drives demand. The analysis showed that the share of MQLs from paid channels fell from 40% to 14%, while the ad budget rose from 1,365 to 2,754 euros per month. A blended dashboard had hidden that ads were buying less and less qualified demand.
In all honesty
You have surprised me in multiple ways the last few weeks.The report you shared with us was very comprehensive and rich. Really insightful and interesting.Contact us
Briefly tell us what it is about. You get a personal reply from Tanguy or someone from the team, not a call centre.
We visualize your data through custom dashboards in Looker Studio, Power BI or Tableau, or in clear presentations that everyone in the company can understand.
We start with a review of your existing reporting and tracking, correct faulty or missing measurements and establish a reliable baseline before making strategic adjustments.
Yes. We build on what you already have: GA4, Google Tag Manager, your ad platforms and your CRM. We connect those sources so you have one version of the truth instead of separate numbers per tool.
Pricing depends on scope: a one-off tracking and reporting setup or ongoing analysis and optimization, the number of channels and the depth of analysis. Contact us and we look together at what fits your goal.
A correct tracking and dashboard setup is usually in place within 2 to 4 weeks. From then on you have reliable numbers from day one; the strategic insights get stronger as more data comes in.
That depends on your sales cycle and channels. For short cycles a data-driven or last-click model often works well; for long B2B journeys we lean toward a model that weighs the entire customer journey. We tailor it to your business, not to a default setting.
Reliable data is the foundation under every channel. Only when you know which campaigns produce leads can you shift budget to what works. That is why our reporting directly feeds your SEO, your Google Ads and your entire paid advertising strategy.
Conversion tracking cleaned up from GA4 to Google Ads, so every channel gets its real leads back.
Lead tracking restored in GA4, Google Ads, Meta and LinkedIn after a silent form break.
Measurement rebuilt around one conversion, the booked demo, from website to HubSpot.