Explore a conference talk from USENIX ATC '23 that delves into the critical aspects of change management in physical network lifecycle automation. Learn about Google's approach to managing large-scale networks through automated systems, focusing on the challenges of reliably and efficiently handling various types of changes. Discover the importance of supporting multiple parallel changes without conflicts or mistakes, while maintaining team and process parallelism. Gain insights into specific change management strategies, including managing conflicts between operations on the same network and across network boundaries, as well as handling representational changes in automated system models. Understand how Google combines novel software systems and software engineering practices to address these challenges in network design, construction, evolution, and management.