Throughout their professional careers, Akko Groenhof and Klaas van Rijn - who are the founders of Custom Airport Solutions B.V., abbreviated as CAS - have worked closely together on various grand projects in the aviation sector.

One of the many projects that Akko and Klaas were responsible for was the design, development, and implementation of the Schiphol Airport security lanes. They were leading in the new technology integration and implementation of the Computer Tomography scanners (CT-scanner/3D-scanner). They have also worked on business change trajectories which had an impact on the airport's processes and infrastructure. All these projects include working together with various internal and external stakeholders

Their exceptional collaboration and similar working ethic is what spurred Akko and Klaas to establish their own company, CAS. Their main goal was to work together on compelling and intriguing projects. Furthermore, they want to provide their clientele with custom made solutions that would fit with their specific wants and needs.