Who we are

Thornstein Groep

As an independent expert in the market, Thornstein Groep has been advising organizations very successfully in the area of IT sourcing (IT strategy, procurement, contract & vendor management) for nearly two decades. Our specialty is software licensing, cloud & outsourcing contracts, compliancy claims and cost reductions. Thornstein Groep is extremely specialized in purchasing of the right software licenses for the best prices, conversion of software contracts to (public and private) cloud, realization of cost reduction on (current) IT contracts and the solving of compliancy claims.
In every project, Thornstein Groep plays a key role in making sure that the right knowledge is used at the right time. With the goal: to achieve the most optimal result for our clients. Because we can trust on our up-to-date knowledge and experiences, we can offer our specialist expertise on a result based commitment or a fixed price. We also offer our services based on an hourly rates.
Especially the big, worldwide suppliers of software, cloud and IT (outsourcing) services have our focus, like Oracle, SAP, Microsoft, Amazon, IBM, CA, Microfocus, Accenture, and Cognizant.

Our passion

It is our passion to achieve an optimal result for our clients with very detailed knowledge of the global IT suppliers and the technological developments in the branch.

bovenaanzicht bureau met laptop thornstein

Our values

We are the independent experts in IT sourcing. Our core values are: craftsmanship, integrity, up-to-date knowledge, teamwork and objectivity. Our client always comes first.

Our ambition

Thornstein Groep makes sure that the knowledge inequality between organizations and their IT suppliers is taken away. As an independent IT sourcing consultancy firm, we support you with purchasing the right software, IT services, and cloud services against the best possible commercial conditions.

Please contact us

Are you interested in our services or do you want to plan an exploratory conversation, then you can contact Thornstein Groep directly.


Postbus 75420, 1070 AK Amsterdam


+31 (0) 20 26 101 55