The application of operations research (OR) at TNT Express during the past seven years has significantly improved decision-making quality and resulted in cost savings of 207 million euros. The global optimization (GO) program initiative has led to the development of a suite of optimization solutions to assist the operating units of TNT Express to improve their package delivery in road and air networks. To create and deploy these solutions, we established communities of practice (CoPs), at which internal and external subject matter experts meet three times annually at an internal conference. We also created a unique two-year learning environment, the GO academy, where employees of TNT Express are taught the principles, use, and deployment of optimization techniques. As a result of these combined initiatives, OR is now an effective part of the core values at TNT Express.