To achieve this, you will lead execution of Entra Apps migration/remediation runbooks during your shift, ensuring predictable throughput and quality gates. You will own triage for application access failures post‑tenant transition, addressing SSO misconfig, missing claims, certificate/secret issues, redirect URI mismatch, and conditional access blocks. You will coordinate recreation and validation of enterprise apps and app registrations in the target tenant, including keys/secrets/certs rotation and permissions re‑grant patterns where applicable. Additionally, you will manage cross‑tenant access considerations that support collaboration and transition states (where used), ensuring correct governance and safe configuration. You will maintain the shift backlog, prioritise by business criticality and cutover schedule, and coordinate stakeholder validation where required. You must drive evidence capture, including configuration proof, test results, sign‑in validation, rollback notes, and completion records suitable for audit/governance. Furthermore, you will ensure operational handovers are crisp, with open risks, high‑priority apps, dependencies, and next actions clearly documented. Finally, you will coordinate with Devices/Shared Data/Power Platform/Power BI teams to resolve identity and app dependencies impacting wave execution, drive continuous improvement of runbooks, templates, and test scripts to reduce time per app and minimise repeat defects, and escalate complex vendor application issues with complete diagnostic evidence and clear business impact.