This design assumes a centrally governed modernisation model where transformation is platform-led, not project-led, with clear separation between assessment, transformation, and runtime accountability. Governance is enforced through identity and policy control to ensure all workloads transition through auditable pathways, with Microsoft Azure acting as the execution environment anchored by Microsoft Entra ID and Azure Policy. Consumption follows a pipeline discipline that prevents unmanaged migrations and enforces consistency across teams. The model prioritises controlled scale over rapid but fragmented modernisation.