A data structure is provided that identifies relationships between entities of an infrastructure of a computing system and that is configured to update in response to changes in the infrastructure of the computing system. The data structure includes vertices and edges, where each vertex of the data structure represents an entity of the infrastructure, and where each edge of the data structure represents a relationship between entities of the infrastructure. When usage data are received, the usage data are analyzed to determine a correlation between a first operation specifying a first entity and a second operation specifying a second entity. An edge between the first entity specified by the first operation and the second entity specified by the second operation is generated. Event data comprising usage data specifying either the first entity or the second entity is generated.