Support with migration planning and execution: dependency remediation, data migration and refactoring, post-migration validation, and use of EY Migration Accelerators & Playbooks, and participation in the analysis of existing IT and data center landscapes., Assist in defining sovereignty requirements: workload and data sovereignty assessments, vendor and cloud archetype assessments, as well as piloting and validation, and support in designing sovereign landing zones: data residency and encryption architectures, identity and access management, logging, monitoring & auditability concepts (SOC integration)., Participate in the analysis of regulatory requirements (DORA, BAIT, EBA, BaFin) and develop sovereign operating models and sovereign cloud re-platforming concepts., Support the development of IT infrastructure and data center strategies in line with regulatory, compliance, resilience, and supervisory requirements, as well as AI infrastructure planning., Utilize and further develop EY assets: Sovereign Landing Zone Blueprints, Cloud Provider Archetype Assessor, Sovereign Readiness Assessment Matrix, Centralized Logging & SOC Integration Model, and External Key Management & Encryption Architecture.