Programmatic advertising agency
The programmatic advertising agency that reaches your audience at scale.
We reach your audience wherever they browse: data-driven display and video campaigns across the entire web, automatically optimized toward results.
Tanguy De Keyzer Founder & digital strategist Last updated: 28 September 2026
Trusted by growing brands
Sound familiar?
My brand is invisible the moment people aren't actively searching.
I buy banner space, but I have no idea whether it delivers anything.
I keep reaching the same people and miss out on new audiences.
How we help
We buy ad space automatically based on data, show your brand to the right people at the right moment and continuously optimize toward what converts.
Why Customer Impact
Why our approach is different.
Data-driven buying
We buy ad space automatically based on data, not on gut feeling or fixed placements.
Your brand at the right moment
We show your message to the right people at the moment it counts.
Brand safety and transparency
We control where your ads appear and keep your buying fully transparent.
Measuring and optimizing on results
We continuously optimize for conversion, not for impressions alone.
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.
We run programmatic data-driven to put your brand in front of the right people, connected to your broader media mix and steered toward what converts.
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
The programmatic advertising agency that reaches your audience at scale.
Display & banners
Show your brand on relevant websites across the entire web and build visibility with your audience, beyond the search results.
Online video & CTV
Reach viewers with video campaigns on websites, apps and connected TV, beyond the standard video platforms.
Data-driven targeting
Reach people based on interest, behavior and context, and build audiences from your own data.
Retargeting at scale
Stay top of mind with website visitors across all the sites they visit and guide them back to conversion.
Brand safety & control
Your ads only appear in a safe, relevant environment, with full control over where your brand shows up.
Reporting & optimization
Transparent KPIs on reach, viewability and conversions, with continuous optimization toward return.
Our process
From goal to smart buying in 5 steps.
Goals and audiences
We define your goal and the audiences you want to reach.
Data and targeting
We build the targeting based on your data and the right signals.
Campaign setup
We set up the campaigns and creatives across the right channels.
Optimization
We continuously push what converts and cut what doesn't.
Reporting
Clear reporting on results, with concrete next steps.
Search ads capture demand, but they don’t build it
Google captures people who are already actively searching. But the vast majority of your future customers aren’t searching yet. They read, watch and browse, and if your brand doesn’t show up there, you build no awareness. Limit yourself to search ads and you are passively waiting for demand to appear, instead of creating it yourself.
Visible at the right moment, at scale
We use programmatic to show your brand to the right people, wherever they browse. We buy ad space automatically based on data, reach new audiences and stay top of mind with people who already visited your site. Everything is transparently measured and continuously optimized toward return.
Programmatic works best as the layer underneath your full paid advertising strategy, alongside Google Ads and social ads that capture the demand you create.
Programmatic is powerful for building demand with people who aren't actively searching yet, but it demands tight control. Without proper brand safety and clear KPIs, you mostly pay for impressions nobody remembers.
Tanguy De Keyzer Founder of Customer Impact and digital strategist What clients say about us
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.”
AAxel 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.”
JJanitor Waterschoot
Verified review via Google
“They do not just execute, they also think along strategically. Real B2B specialists. Recommended!”
JJack 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.”
TTandarts.nl
Verified review via Google
“Smooth communication, proactive thinking and everything neatly followed up.”
CClaire 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 ❤️”
JJovana Vakic
Verified review via Google
Compare your options
Outsourcing programmatic advertising: agency, freelancer or in-house?
| Customer Impact | Large agency | Freelancer | In-house | |
|---|---|---|---|---|
| Cost model | Fixed monthly price, no percentage of your media budget | Often a percentage of your media budget | Hourly rate or fixed price | Salary, tools and platform licences |
| Minimum term | 3 months | Often 6 months or longer | Per assignment | Employment contract |
| Steering on | Leads and cost per result, not just impressions | Often impressions and reach | Often impressions | Depends on experience |
| Brand safety | Exclusion lists and placement checks | Varies | Varies | Depends on your tools |
| Response time | Reply within 24 hours on working days | Via an account manager | Depends on availability | Immediate, but often one person |
These are typical traits per type of partner, not statements about specific agencies.
What to expect
When do you see what?
Week 1 to 2
Audiences and tracking
We define audiences, brand-safety rules and conversion tracking.
Week 3 to 4
Campaigns live
Display and video campaigns go live across the web.
Month 2
Test and clean up
We exclude poor placements and test creatives and audiences.
Month 3
Evaluation on cost per result
After three months you know which audiences and placements deliver results.
Month 4 to 6
Scale
We scale reach where it measurably contributes to leads.
In all honesty
Who is this not for?
- Your media budget is very small: programmatic only pays off at some scale.
- You only want direct search leads: then Google Ads is the better start.
- You judge success on impressions only, without leads or sales as the goal.
- You want a one-month test: we work with a minimum of 3 months.
Contact us
Tell us where you stand.
Briefly tell us what it is about. You get a personal reply from Tanguy or someone from the team, not a call centre.
Frequently asked questions
What exactly is programmatic advertising? ＋
The automated buying and selling of ad space through real-time auctions. Instead of buying banner space manually, you use data to reach exactly the right people at the right moment, across thousands of websites and apps at once.
Does programmatic work for B2B? ＋
Definitely. It is strong for building visibility and demand with a specific audience, and for putting your brand in front of accounts from your [ABM](/en/services/abm/) list.
How do I know my ads are running in a safe environment? ＋
We work with brand safety controls and exclusion lists, so your brand only appears in a relevant and trustworthy environment. You get full transparency on where your campaigns run.
How do you measure results? ＋
Through clear KPIs: reach, viewability, clicks and conversions. You get a transparent report showing what works and where we are adjusting.