Marketing strategy agency Marketing strategy that sharpens your growth.
Looking for a marketing strategy agency that does more than write a plan? We sharpen your growth choices and translate them into execution, budget and measurable pipeline.
Tanguy De Keyzer Founder & digital strategist Last updated: 1 July 2026
Trusted by growing brands
Sound familiar?
We do marketing, but without a clear plan or direction.
Our decisions are based on gut feeling, not on data.
I don't know where my budget is best spent.
How we help
We build a data-driven marketing strategy that sharpens your priorities and raises your odds of success.
Why Customer Impact
Why our approach is different.
Strategy based on data
We start from your numbers, market and customers, not from a hunch about what should work.
Focus on the right levers
We pick the few actions with the biggest impact, instead of doing a little bit of everything.
Marketing and sales connected
A strategy that puts both teams on the same goals, so leads actually become customers.
Strategy and execution under one roof
No plan that ends up in a drawer: we create it and execute it, together with you.
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, a strategy is never a document that ends up in a drawer: we set the priorities and execute them, so your plan actually delivers growth.
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 strategy that sharpens your growth.
Marketing strategy
Insight into the strengths and weaknesses of your current approach, so you set the right priorities.
Data strategy
Uncover the data to steer all your marketing functions and increase your impact on customer acquisition.
Market strategy
We pin down your addressable market so every touchpoint contributes to potential revenue.
Financial modelling
We build the models so every decision has a measurable impact on your revenue.
Persona & account strategy
Based on market research and persona development, we build strategies for your most important audience.
Digital strategy
A plan for deploying digital channels and technologies to reach your business goals.
Our process
From analysis to a sharp plan in 5 steps.
Analysis and baseline
We map your market, audience, competition and current numbers.
Goals and priorities
We set clear goals and identify the levers that get you there fastest.
Channel and message choices
We choose the channels and the message that truly resonate with your audience.
Roadmap and execution
We translate the strategy into a concrete plan and set it in motion.
Measure and adjust
We track results and refine the strategy based on data.
Strategies that raise your odds of success
Performance marketing drives qualified brand awareness alongside sales KPIs such as leads, SQLs and revenue. With Customer Impact you put the customer at the center of your marketing strategy: we develop targeted plans based on data, not just gut feeling.
Putting customer insights to work is how today’s best companies grow: focused, measurable and sustainable.
Strategy is above all about choosing what not to do. Most marketing budgets underperform because they get scattered, while sharp choices based on data and customer insight dramatically raise your odds of success.
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.
“Strong lead generation and analysis of growth opportunities using AI technology that makes a real impact.”
RRené De Keyzer
Verified review via Google
“I have been working with Tanguy for three years now and it is always a pleasure. Plenty more good things to come!”
PPieter-Jan Maleux
Verified review via Google
“Tanguy combines knowledge, fresh ideas and hands-on experience in a rare way that makes a tangible difference for growing companies.”
FFern Thanaporn Uparirat
Verified review via Google
“Fantastic company to work with. They helped us build our website and with lead generation, and we are very happy with it. The smooth communication made the whole process pleasant.”
LLahcene Merzoug
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
“Tanguy built a completely new website for us, with a structure and message truly focused on convincing visitors. Highly recommended.”
SSam Van den Bosch
Verified review via Google
Frequently asked questions
Why a separate strategy instead of jumping straight into execution? ＋
Your offering isn't for everyone, and your strategy shouldn't be either. By putting customer insights first, you avoid wasted budget and significantly raise your odds of success.
What data do you base the strategy on? ＋
On market and customer research, your existing performance data and clear financial models, so every choice is substantiated and geared towards revenue.
Ready to win your market?
Book a meeting with our digital strategist Tanguy.