On Premise Server to AWS Cloud Migration: How AWS On Premises to Cloud Migration Strengthens Banking Security

Important considerations include: 

• Access control and privileged account management 
• Audit logging and evidence retention 
• Data encryption and protection 
• Change management and configuration reviews 
• Incident response documentation 
• Backup and recovery requirements 

AWS provides capabilities that can support these controls, but using AWS does not automatically establish compliance. Banks remain responsible for configuring services appropriately, maintaining required procedures, and understanding their responsibilities under the applicable regulatory framework. 

Security and compliance reviews should be included in migration testing and approval procedures. This helps organizations identify control gaps before sensitive financial applications enter production. 

5. Secure Data Migration and Validate Financial Records

Moving data from on-premises servers to AWS requires careful attention to confidentiality, completeness, and accuracy. Incorrect transfers or inconsistent database records can affect transaction processing, reporting, and customer account information. 

Banks should establish a data migration plan that defines transfer methods, access restrictions, validation procedures, and acceptance criteria. 

Depending on the workload, AWS Database Migration Service (AWS DMS) can support migration between compatible source and target databases. AWS DataSync can support transfers between on-premises storage and supported AWS storage services. 

After transfer, teams should validate record counts, database consistency, application access, and relevant transaction reconciliation results. If the source environment continues receiving updates during migration, the plan should also explain how changes will be synchronized before cutover. 

Applications should not be considered ready for production until the required data and functional checks have been completed. 

These procedures help banks confirm that migrated information remains accurate and accessible to authorized applications and users. 

6. Strengthen Backup and Disaster Recovery

Banking operations require reliable access to applications and financial records. Hardware failures, cyber incidents, accidental deletions, and other disruptions can affect availability when recovery arrangements are inadequate. 

Migrating to AWS provides an opportunity to review existing backup and disaster recovery strategies. 

Banks should define recovery time objectives (RTOs), which specify target restoration times, and recovery point objectives (RPOs), which define acceptable data loss measured in time. 

Depending on the workload, recovery measures may include protected backups, database replication, redundant resources, and documented restoration procedures. 

Access to backups should also be restricted appropriately to reduce the risk of unauthorized modification or deletion. Recovery procedures must be tested regularly to confirm that applications and data can be restored successfully. 

A well-defined recovery plan helps banks prepare for disruptions while maintaining appropriate controls over financial information. 

7. Establish Continuous Cloud Security Management

Security responsibilities continue after migration. Banks must regularly review permissions, maintain configurations, monitor vulnerabilities, manage updates, and investigate security events. 

A defined cloud security operating model helps ensure that these activities are performed consistently. 

Ongoing practices may include access reviews, configuration assessments, security monitoring, vulnerability management, incident response exercises, and recovery testing. 

Banks should also clarify responsibilities between internal teams, AWS, and any external cloud management provider. Clear ownership helps prevent gaps in monitoring, maintenance, or incident handling. 

Cloud resource configurations and security requirements may change as applications evolve. Regular reviews help identify weaknesses and confirm that controls remain appropriate.