Abstract: Methods, systems, and computer-readable media with executable instructions stored thereon for constraint definition for capacity management. Constraint definition for capacity management can include discovering a topology of a set of resources. A number of policy rules for the set of resources can be defined. A Dependency-Group (D-G) tree can be constructed according to the number of policy rules. Information obtained from the D-G tree can be converted into a set of resource placement constraint definitions understandable by a consolidation engine.