Guido Jansen discusses creating an optimization culture at Randstad, a global staffing firm. He outlines both challenges, like independent operating countries and limited local resources, and opportunities, like management buy-in and mature analytics teams. Jansen advocates getting top management buy-in, involving teams, and establishing a culture of continual experimentation and improvement. The goal is for all major countries to have data-driven optimization teams working together and integrating with other departments.