Marketing data agency Marketing reporting and analytics that turn numbers into growth.
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: 1 July 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
Why our approach is different.
Tracking that's right
Without correct measurement you are steering blind. We lay a foundation you can rely on.
Dashboards you actually use
No overloaded reports, but clear dashboards that show what matters.
Focus on decisions
We translate data into concrete actions, not numbers for numbers' sake.
Privacy-friendly and GDPR-proof
We measure correctly and in line with privacy rules, with consent properly handled.
About Customer Impact
The missing piece of your growth puzzle.
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:
- Efficiency over volume: the right levers, not more noise
- Every euro measurable, from lead to revenue
- Marketing and sales aligned around the same goals
- Strategy and execution, under one roof
What we do
Marketing reporting and analytics that turn numbers into growth.
Custom reports
We translate your goals into the metrics that matter and build visual reporting that resonates with your teams.
Data strategy implementation
Coherent, full-funnel strategies across all your performance channels to create real impact.
Data-driven decision making
We let the data set the strategy and give you an action plan that steers toward the most growth.
Data analysis
Using your reports, we analyze what works and tell the story behind the numbers.
Tracking & pixel configuration
We configure tracking and pixels correctly and implement them for your key platforms and tools.
The right attribution model
We tailor an optimal attribution model based on your business, technology and goals.
Our process
From measurement plan to better decisions in 5 steps.
Measurement plan
We define which goals and events you really want to measure.
Tracking implementation
We set up the tracking correctly, from analytics to conversions.
Dashboards
We build clear dashboards around your most important KPIs.
Insights and recommendations
We translate the data into concrete recommendations to act on.
Continuous refinement
We follow up and refine your measurement setup as you grow.
Together we bring clarity
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.
Our approach: from tracking to decision
Good reporting doesn’t start with a dashboard, but with reliable measurement. Our method in four steps:
- Audit. We check your existing tracking, tags and reports and hunt down faulty or missing measurements. No decisions based on data that’s wrong.
- Foundation. We set up your tracking correctly: GA4, Google Tag Manager, conversion measurement and the attribution model that fits your sales cycle.
- Dashboards. We build clear, visual reporting your teams actually use, with the metrics that steer toward your goals.
- Insight and adjustment. We tell the story behind the numbers and translate it into a concrete action plan that delivers growth.
Reliable tracking as the foundation
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.
Data that sharpens your entire marketing
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.
Who is this for?
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? Book a free intake 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 Frequently asked questions
Which tools do you report in? ＋
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.
What if my tracking is wrong right now? ＋
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.
Do you work with our existing tools like GA4 and our CRM? ＋
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.
What does marketing reporting and analytics cost in Belgium? ＋
A one-off tracking and reporting setup typically starts from 1,500 euros; ongoing analysis and optimization usually runs between 500 and 1,500 euros per month, depending on the number of channels and the depth of analysis. We look together at what fits your goal.
How long until I have reliable numbers? ＋
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.
Which attribution model do you choose? ＋
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.
How does better data strengthen my other marketing channels? ＋
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.
Ready to win your market?
Book a meeting with our digital strategist Tanguy.