The Neo4j graph schema defines hierarchy nodes for Company, Pillar, Group, BusinessUnit, VirtualBusinessUnit, and CrossUnit so that organizational structure can be represented in the graph.

**Hierarchy nodes:** Company → Pillar → Group → BusinessUnit → VirtualBusinessUnit, CrossUnit

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

Company → Pillar → Group → BusinessUnit → VirtualBusinessUnit, CrossUnit

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md

### Graph Schema (Neo4j)

— PYRANA_PLATFORM_ARCHITECTURE_REFERENCE.md