Commercial Excellence

The best practice for the best results


years of experience


books sold

€23 billion+

contract value protected

Retain your profitable customers
Strengthen partnerships with your customers
Take advantage of (new) opportunities and identify risks.

One man's 'magic' is another man's engineering

Organized for success

For business service providers that strive for relevance and partnership with their most important customers, realizing ever-changing customer expectations is essential. This allows your customers to experience value that they cannot simply find from someone else. The end-to-end process of value creation requires coordinated involvement of management, commerce and operational management.

Tenacity has specialized in commercial excellence for more than 35 years. We offer a proven approach to deep insight into the customer and their decision-making. We offer unique management processes, tools and templates that make your organization the most successful in the market. We transfer our knowledge by training and coaching your people and by setting up and ensuring an efficient and effective management process. Because if you are not organized for success, you have to keep correcting for success.  

Tenacity solutions improve Customer Retention and Profitable Growth sustainably, as has been demonstrated by leading companies for which we protect more than 23 billion euros in contract value worldwide.

Why our solutions work

More than €23 billion in customer contracts worldwide are protected with our processes. For several customers, annual profits themselves have increased by more than €100 million! Being great Numbers, not? Why are our solutions so effective?

Results arise from your working method. A working method makes it clear WHAT is essential and how these essential tasks can best be performed. If that method is structural, so are the results.

These Tenacity working methods are based on insights and best practices from more than 35 years of practical experience.

Tenacity's solutions ensure optimal collaboration between commercial, operational and management roles. So everyone does things that bring results and they know how to do this the most effective way to do. We help you gain insight into challenges, help you make choices, implement, train, coach and safeguard them. Until it works optimally.


What our customers say...

Johan StellingerwerfManaging Director Sodexo Altys
Read More
You can lose customers while having high customer satisfaction. Clients for Life gives the word 'value' a whole new meaning. Now I look at the relationship from the perspective of what relevant added value you can provide from your organization instead of from your product or service. This means that I shape the relationship with my customers in a different way. Very inspiring.
André MeijerGeneral Manager Volkerwessel Telecom
Read More
If you think it's all about customer satisfaction, you're in for a surprise. Tenacity shows how your key accounts view your organization and provides guidance on how you can lead your organization to higher customer retention.
René NijkampGeneral manager Sales & Industry Management Start People
Read More
Clients for Life helps achieve our goal: 100% of our clients choose Start People every time based on the value they experience in the collaboration. Do you have the same ambition? Then I highly recommend this book. Then you can also read why we believe this goal starts with consciously choosing customers who are a good fit for us.
Michiel HillebrandChief Operating Officer Leviy
Read More
Tenacity has helped us with a strategy to remain relevant to our customers over the long term. The Account Plan Canvas is a great instrument in this regard.

A selection of our customers


Philips HealthCare


Canon Business Services




Start People employment agency


Olympia Employment Agency


Medtronic IHS


Open Line Cloud solutions


CSU Cleaning