# Phase 4: Application migration execution
<a name="phase-4-application-migration-execution"></a>

**Considering migration** **scope of 1 cluster \| 100\+ applications. The following table represents the application migration execution effort.**


| 
| 
| Activity | Effort (Hours) | 
| --- |--- |
| Manifest conversion (OpenShift to vanilla K8s) | 160 | 
| Image migration to Amazon ECR | 80 | 
| ConfigMaps and Secrets migration | 60 | 
| Persistent volume migration and data transfer | 120 | 
| Service and ingress reconfiguration | 80 | 
| Role-Based Access Control (RBAC) and security context adjustments | 60 | 
| Application deployment to Amazon EKS | 200 | 
| Integration reconnection and validation | 120 | 
| Smoke testing per application | 150 | 
| Performance baseline validation | 80 | 
| Issue resolution and troubleshooting | 160 |