The strength of the Netherlands as a market maker, the importance of a European ecosystem and a barrage of examples of applications that will determine our world in the coming years. That is the common thread of the visit that a very interested King Willem-Alexander paid today to the High Tech Campus in Eindhoven. Everything revolved around integrated photonics, the technology that is seen worldwide as decisive for the development of smaller, faster and energy-efficient devices. With demonstrations in Holst Center and round table discussions at PhotonDelta, the King learned about the essence of the technology, its applications and its importance for the future of the Netherlands and Europe.