Techniques implementable in an enterprise application or application suite for managing the organizational structure of an enterprise. In one set of embodiments, a single, unified hierarchy can be defined for the organizational structure of an enterprise. The unified hierarchy can include high-level nodes that correspond to entities common to different manifestations of the organizational structure (e.g., reporting structure, cost structure, etc.). The unified hierarchy can also include lower-level nodes that are unique to a particular manifestation. By defining a single, unified hierarchy in this manner, organizational changes in the enterprise can be modeled in the application/application suite by simply updating the unified hierarchy (rather than updating multiple hierarchies). In addition, the unified hierarchy can be used to facilitate security provisioning and reporting.