The I nitial

The Initial

From 0 to successful in-house A/B Testing Program. Built, proven, and handed over.

Proven ROI of 30%+

Our team first, hire later

Setup, Teach & Exit

No Endless Retainers

Our Clients

Our Clients

Our Clients

philosophy

You can’t rent Experimentation.
You need to own it.

A/B testing grows companies. To do it right, it belongs in the DNA of your organization. We help companies that do $100M+ yearly get there.

We help install an in-house experimentation system in 12 months.

From the start we collaborate and engage multiple stakeholders. We Research & run your Experimentation Program like any other top-10% CRO Agency, the difference is: we the endgoal to make you self sufficient. Slowly the program transforms from done-for-you to done-with-you.

To do so we need to increase resources for your team. We prove ROI and strategic value of experimentation to leadership to help you gain resources or priorities to bring this in-house.

In the last phase of ourprogram we will audit your org to find all opportunities to build the best data-driven org.

Companies that Experiment grow exponentially compared to the ones that don't. (Experimentation Works, Stefan Thomke , 2020)

+37.5% ROI

+37.5% ROI

+120% ROI

+120% ROI

+875% ROI

+875% ROI

Phase 1: CRO Research, Audit & Connect

An Audit & Ideation session is the foundation for Experimentation Strategy. This also includes 25+ tactical a/b tests. The mechanism of the workshop will connect teams and stakeholders across the organization.

25+ tactical recommendations

Connecting teams & stakeholders

A/B testing Strategy

Phase 2: Run & Build Experimentation Program

We build the process while running A/B tests. This will be the blueprint for the coming years of your experimentation habits and culture. Including: a positive business case for Experimentation.

1 to 10 a/b tests a month

Expect 30%+ ROI, focus on YoY growth.

Done for you first, done with you later.

Phase 3: Maturity Audit, Hiring & Smooth hand-over

We audit the organization to spot opportunities to keep building out the data-driven org. If there’s room for hiring we outline the right profiles & help with our global network. We teach & transfer knowledge.

Organization Maturity Audit

Hiring support

Smooth transitioning

Our Clients

Our Clients

Our Clients

Experimentation Gap

Your team is state-of-the-art, but you're not running experiments yet?

Plenty of succesful companies are not using the lever of Experimentation to grow. This is what we call the Experimentation Gap. One of our clients, a $293.4 million company, didn’t run experimentation yet until recently. A B2B Saas client of ours ($1.09 billion company) didn’t run A/B tests yet until a few years back.

Tell you what…
Now they experiment.

Tech

Product

A/B testing

Tech

Product

A/B testing

Experimentation Gap

Experimentation Gap

free advice

Still need to find your Initial testing tool?

Want advice on which testing tool to go with for your situation? Take the test. Get a top-3 of tools. Take the demos. Follow our free guide to help you know which questions to ask.

Free advice. Done in 5 minutes.

Free advice. Done in 5 minutes.

Case studies

Case studies

Case studies

Independer, the $70M+ Dutch corporation, scaled to 37 A/B tests a month

Nominated for the Experimentation Elite Agency Award 🏆. They now have an in-house team.

Semrush achieved leadership buy-in and now runs a succesful in-house program

4 A/B tests a month experimentation program (2026) and ideation workshops + 2 A/B tests a month (2025)

Modulari.com runs the Initial A/B testing Program, accelerating the growth of webshops in Europe.

Initially 3 A/B tests per month. Scaled two other European webshops. Average ROI for this program: 120%. Hired an in-house CRO Specialist.

Startup Smartwatchstraps sets up Initial and grows webshops throughout Europe

Scaled from zero tests per month to 20+ internationally. Setup 10+ AI Automations.for CRO and Shopify.

Experimentation Bootcamp & Tool advice

We led workshops to get the team started and helped them find an a/b testing tool.

Meet the team

Our dedicated team

Team ready to build your Experimentation Program

Let's grow together.

Lucia van den Brink

Lucia van den Brink

Founder

Founder

Founder

  • Ran 1,000+ A/B tests

  • Keynote Speaker

  • 3x award winner

Bjarn Brunenberg

Bjarn Brunenberg

Program & Culture Builder

Program & Culture Builder

Program & Culture Builder

  • ex-TomTom

  • AI Fluency Club

  • 2x award winner

Renato Cardso

Renato Cardso

CTO

CTO

CTO

  • 20+ yrs Software Engineer

  • Technical setup

  • Hiring

Julia Bombonati

Julia Bombonati

Administrative Assistant

Administrative Assistant

Administrative Assistant

  • Supporting projects
    at The Initial and Women in Experimentation

Johnno van den Brink

Johnno van den Brink

Head of Automations

Head of Automations

Head of Automations

  • CRO through AI

  • Automates workflows to speed up the process

Cristina

CRO Strategist & UX Design

Muhammad M.

Developer

Kathleen Asjes

UX Research

You?

Keep an eye out for vacancies on our Linkedin Page.

awards

Award-winning team.

Gotta catch 'm all.

Let's grow together.

Agency Team of the Year nominee @ Experimentation Elite

Agency Team of the Year nominee @ Experimentation Elite

Agency Team of the Year nominee @ Experimentation Elite in London

CRO Thought Leadership Award by Kameleoon

Experimentation Culture Community Award

How we stand out

The differences

The Initial

Running A/B tests

Integrating other teams

Helps you hire your in-house team

Teaching & smooth hand-over

6-12 months project based

The Initial

The Initial

The Initial

Agency

Agency

Costly monthly retainer

Costly monthly retainer

hands-on advice for your situation

What to know how much value Experimentation can bring to your businesss?

walk away with a clear plan to build Experimentation in-house

We calculate the potential revenue from an a/b testing program

Learn how to build a solid business case for Experimentation.

2 episode a month

The Initial Podcast

How did other brands built their Experimentation Programs & data-driven mindset?

brands On our podcast

brands On our podcast

brands On our podcast

  • Booking.com

  • Booking.com