"The city of Rotterdam has been working on its 3D Digital Twin for several years. Rotterdam has a lot of experience in building a digital twin and embedding it in their organization and various departments. Their Digital Twin is online via 3DRotterdam.nl. Virtual City Systems and Future Insight have supported the city in their vision of how to build its Digital Twin. In this webinar we will share use cases, lessons learned, and why open standards are important for building a sustainable and flexible solution."