People who take your growth as seriously as you do.
We are Customer Impact, a close-knit team of strategists, marketers, designers and developers based in Antwerp. Born from the passion of founder Tanguy De Keyzer, we have been building the growth engine of ambitious companies for more than 10 years. From the first plan to the last lead.
years of digital marketing
more MQLs in 6 months
more daily visitors in 66 days
deal closed via ABM
Our story
From technology to customers.
Tanguy started his career in IT. There he discovered something many companies overlook: technology is rarely the real problem. The true challenge is winning and keeping customers.
That insight became the seed of Customer Impact. We extend your marketing and sales team with strategies, analyses and tools that integrate seamlessly and drive growth. No one-off campaigns, but a system that connects marketing and sales and keeps performing.
Today, more than 10 years later, we help startups, scale-ups and established companies build their digital growth engine. Always with the same goal: more leads, more revenue and stronger brands, fully measurable. And yes, we love doing it.
How we work
No agency fluff, just this.
Six principles you can always hold us to.
Everything under one roof
Strategy, content, SEO, GEO, advertising and development. No referrals, no finger-pointing between agencies.
One dedicated point of contact
You work with a team, but you have one face who knows you by name and knows your file inside out.
Data in the driving seat
We steer on leads, customers and revenue. Not on vanity metrics that look good in a report but deliver nothing.
We think along and do the work
No non-committal advice that ends up in a drawer. We make the plan and execute it, together with you.
Quality over quantity
Not more channels or more noise, but the right levers that truly make the difference.
Sharp on the ball, warm in the relationship
Short lines, fast answers and a collaboration that is both professional and enjoyable. It can be both.
The founder
Marketing with numbers and psychology.
Tanguy works at the intersection of data-driven marketing and behavioral science. He helps ambitious companies maximize their online ROI by understanding what truly moves people, and turning that into measurable growth.
In recent years he also became a pioneer in GEO (Generative Engine Optimization): the new discipline that makes brands visible inside AI models such as ChatGPT, Claude and Gemini. He wrote the book The End of Search about it.
Tanguy holds a Master in Management and Marketing (Magna Cum Laude, AP University of Applied Sciences, Antwerp) and built up experience at several agencies and tech companies before founding Customer Impact.
"Technology was never the problem. Winning and keeping customers, that is where we make the difference."
The team
The people behind your growth.
Each with their own specialty, together one team that wants just one thing: more leads and customers for ambitious companies.
Pieter-Jan Maleux
Lead Advertising Expert
Farah Maulida
Design & Product (UX/UI)
Fern Thanaporn
SEO & Content
Sam Van den Bosch
Websites, web apps & AI integrations
Robrecht Exelmans
Web Developer
Our culture
This is what it feels like here.
Short lines, lots of trust and room to grow. We work remote-first, with roots and an office in Antwerp, and we love getting together, for a meeting, a lunch or simply to look at the numbers side by side.
Recognized & experienced
Not to brag. But still, here it is.
of experience in digital marketing
our own book on AI visibility
among the first in the Benelux
reviews on Google
in our open knowledge base
Master in Management & Marketing
Work with us
Want to build with us?
We love growing with people who want to go that extra step. No heavy hierarchy, but plenty of trust, real responsibility and room to grow. Sound like you?
Tell us what you would bring to the team: tanguy.dekeyzer@customerimpact.be.
What clients say about us
Real client reviews on Google.
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.
Customer Impact built a strong new website for us and set up a lead generation approach that truly delivers results.
Janitor Waterschoot
They do not just execute, they also think along strategically. Real B2B specialists. Recommended!
Jack Daly
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
Smooth communication, proactive thinking and everything neatly followed up.
Claire Farrell
Super professional and extremely creative! They managed to adjust and respond to all of our needs numerous times. Highly recommend ❤️
Jovana Vakic
Tanguy combines deep expertise, fresh thinking, and hands-on experience to help growing companies achieve meaningful results!
Daphne N
Great service. Lean and mean. Would definitely recommend.
Chris Gauci
Top quality service. Can only recommend.
Virginia Lesaffer
Professional approach to creating the website for my side business. Happy with the collaboration. Definitely recommended!
Kayna Geusens
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.
Customer Impact built a strong new website for us and set up a lead generation approach that truly delivers results.
Janitor Waterschoot
They do not just execute, they also think along strategically. Real B2B specialists. Recommended!
Jack Daly
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
Smooth communication, proactive thinking and everything neatly followed up.
Claire Farrell
Super professional and extremely creative! They managed to adjust and respond to all of our needs numerous times. Highly recommend ❤️
Jovana Vakic
Tanguy combines deep expertise, fresh thinking, and hands-on experience to help growing companies achieve meaningful results!
Daphne N
Great service. Lean and mean. Would definitely recommend.
Chris Gauci
Top quality service. Can only recommend.
Virginia Lesaffer
Professional approach to creating the website for my side business. Happy with the collaboration. Definitely recommended!
Kayna Geusens
Ready to grow together?
Tell us your goal in a short conversation and we send you a tailored approach. Prefer a quick call or email? That works too.