This lecture by the instructor from ETH Zurich presents SCION, a highly secure and efficient next-generation internet architecture. SCION offers scalability, control, and isolation on next-generation networks, providing a path-based network architecture with a focus on security and efficiency. The lecture covers the journey towards a next-generation internet, the suggested new architecture, and the two-level hierarchy through isolation domains. It also discusses SCION routing and forwarding overview, the SCION core, deployment challenges, and strategies for deployment. The presentation emphasizes the advantages of SCION, its use cases, and the ongoing efforts towards full deployment.