Many building outages are the result of hidden, cross-system dependencies: a failed UPS that takes down access control, BAS sequences tied to a cloud service, or tenant-critical systems that share a common breaker. In this interview, host Alex Morgan speaks with Michael Harrington and James Rogers about building and using simple dependency maps to expose those domino relationships, prioritize mitigations, and make resilience decisions that align with operations and capital planning. We cover how to start a map with a single floor or critical tenant, choose the right level of detail, assign ownership, and turn the map into tests and maintenance tasks. Listeners will hear concise, real examples of dependencies that surprised property teams, practical rules for scoring critical paths, and a lightweight template you can adopt this week. By the end, you’ll have a clear framework to reduce blindspots, improve cross-trade coordination, and focus investments where they prevent the biggest outages.