A method and associated systems for automatically identifying critical resources in an organization. An organization creates a model of the dependencies between pairs of resource instances, wherein that model describes how the organization's projects and services are affected when a resource instance becomes unavailable. This model may be represented as a system of directed graphs. This model may be used to automatically identify a resource instance as “critical” when excessive cost is required to resume all projects and services rendered infeasible by the disruption of that resource instance. This model may also be used to automatically identify a resource instance as “critical for a resource type” when disruption of the resource instance forces the capacity of the resource type available to the entire organization to fall below a threshold value.