Services
- - Conversion optimization (CRO)Guidance for your experimentation program, from idea to analysis. More experiments, better conversions and informed decisions.
  - Improve your experimentation programMake experimentation a structural part of your organization. We help teams grow with advice, support and training.
  - Product experimentationDevelop products that really work. Validate assumptions and make informed choices.
- - Qualitative researchUnderstand thresholds, motivations and behaviors of your users and discover the biggest optimization opportunities.
  - AutomationsSpeed up your optimization process with automations. Less manual work, more time for insight and strategy.
  - Process MiningDiscover hidden paths, bottlenecks and opportunities to improve the online experience, backed by data.
- See all services
Training
- - Training Conversion SpecialistWant to learn all about conversion optimization? In this training you will learn to test, analyze and optimize like a pro. From knowledge of A/B testing to psychology and UX.
  - Consumer Psychology TrainingTo improve the conversion rate of your website, online store or product, it is essential to understand your customers' drivers. During the Consumer Psychology course, you will learn five optimization strategies to take your CRO program to the next level.
  - Data analysis training for CROPractical training in which you will learn to analyze, validate and present data convincingly within CRO.
- - Incompany TrainingCustomized training for teams looking to grow in experimentation, validation and conversion optimization.
- View all courses
Customers and Results
- - How Bidfood used process mining to discover blind spots in customer behaviorWant to know how customers really move through your platform? Bidfood discovered it through process mining and targeted improvements to their blind spots.
  - A successful experimental program according to DPG MediaHow DPG Media is building a mature culture of experimentation with a strong team, smart tools and training.
  - How AW Lab took the first step toward a validation-driven culture
- - CRO at Beter BedWhat can you learn from 10 years of CRO at Beter Bed? Insights, pitfalls and how they firmly anchored their testing culture.
  - How NS builds a successful CRO strategy with Online DialogueRead how a large organization like NS laid the foundation for a successful validation culture. And grew from 27 to 145 tests in one year.
  - Learning-by-doing: 4 years of working together on VodafoneZiggo's CRO programHow VodafoneZiggo grew in 4 years from gut testing to a robust CRO program with 20 teams and a Center of Excellence.
- See all customer cases
Blogs
CRO toolkit
About us
- - TeamDriven specialists who learn by experimenting
  - EventsSharing knowledge and inspiring each other. We bring peers together to learn and grow.
  - Partners Online DialogueTools from our partners that help translate behavior and data into impact.
- - Get in touchInterested in our approach or a collaboration? We'd love to engage with you.
  - Sign up for the newsletterStay tuned for the latest news on CRO and experimentation!
  - VacanciesCome work at the agency for data-driven optimization.

Reinier Koolmees

Data Analyst

On a daily basis, Reinier is an analyst at Online Dialogue working on data-driven conversion optimization and translating data into insights. Online Dialogue has been a leading CRO agency for 10 years, where people, quality and knowledge transfer are key. We help our clients make better and more reliable decisions using data and psychology.

030 7009 777

All blogs by Reinier Koolmees

14 August 2018

Gebruik je attributie IQ!

Reinier Koolmees

23 July 2018

Content Grouping: when, how and why?

Reinier Koolmees

10 July 2018

First aid for Sample Ratio Mismatch in your experiments

Reinier Koolmees

3 July 2018

(Data) Pitfalls in A/B testing.

Reinier Koolmees

5 June 2018

Advanced Analysis for Google Analytics 360

Reinier Koolmees

24 May 2018

Twinkle Conversion Rubric January 2018: 6 tips for data quality

Reinier Koolmees

March 29, 2018

Optimize your workflow in Adobe Analytics Workspace

Reinier Koolmees

March 1, 2018

What changes with the Google Analytics API sheets add on update?

Reinier Koolmees

January 31, 2018

In 5 Steps Custom Funnels in Google Analytics

Reinier Koolmees

November 27, 2017

Data quality: what are you striving for?

Reinier Koolmees

November 13, 2017

Twinkle Conversion Rubric September 2017: Optimizing for small numbers

Reinier Koolmees

20 October 2017

Automate your test analysis (Google Analytics)

Reinier Koolmees

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Reinier Koolmees

All blogs by Reinier Koolmees

Gebruik je attributie IQ!

Content Grouping: when, how and why?

First aid for Sample Ratio Mismatch in your experiments

(Data) Pitfalls in A/B testing.

Advanced Analysis for Google Analytics 360

Twinkle Conversion Rubric January 2018: 6 tips for data quality

Optimize your workflow in Adobe Analytics Workspace

What changes with the Google Analytics API sheets add on update?

In 5 Steps Custom Funnels in Google Analytics

Data quality: what are you striving for?

Twinkle Conversion Rubric September 2017: Optimizing for small numbers

Automate your test analysis (Google Analytics)

Get rid of those assumptions. Time for proof.