99% Data Integrity Achieved in Cloud Migration

The client was running workloads on legacy on-premises Linux and Windows servers with scalability limitations, requiring migration to AWS for improved availability and ease of management. Aziro provisioned environment-aligned compute instances, performed deep OS-level assessments, and executed a host-based migration approach using rsync, robocopy, and incremental sync cycles. Pre- and post-migration validation through checksum verification and functionality testing ensured near-zero data loss and full application compatibility across the transition.

The client's legacy Linux and Windows infrastructure constrained scalability and availability, while the migration itself required minimal downtime for critical applications. Ensuring secure, reliable transfer of OS-level data and configurations while preserving application compatibility added significant technical complexity to the transition.

• Scalability Limitations On-Premises: Legacy Linux and Windows servers restricted scalability and availability, limiting the organization's ability to manage growing workloads efficiently.

• Downtime Risk During Migration: Migrating critical applications requires minimal downtime, demanding careful sequencing and validation to avoid disrupting business critical operations.

• OS-Level Compatibility Requirements: Ensuring secure, reliable transfer of OS-level data and configurations while maintaining application compatibility posed significant technical complexity. 

Aziro designed a structured migration approach beginning with deep OS-level assessment across Linux and Windows systems, covering installed packages, dependencies, permissions, and system configurations. Environments were recreated in AWS with matching services and networking, followed by host-based data migration and multiple rounds of validation to ensure parity with source systems.

• Environment-Aligned Provisioning: Provisioned compute instances on AWS using Amazon Linux, CentOS, and Windows Server, ensuring alignment with source system architecture and configurations.

• Host-Based Data Migration: Used rsync/scp for Linux and robocopy/backup tools for Windows, preserving ownership, permissions, ACLs, and directory structure.

• Incremental Sync and Validation: Performed full and incremental data sync cycles, followed by checksum verification and pre/post-migration validation across all systems. 

• AWS EC2, AWS VPC
• Amazon Linux, CentOS, Windows Server
• RSync, SCP/SFTP, Robocopy
• Shell, PowerShell, Python Scripts
• MD5sum / SHA Checksum Verification
• AWS & Azure Storage and Compute Services 

The migration delivered measurable improvements in data integrity, downtime reduction, and application consistency. Structured validation and incremental synchronization ensured the client achieved a reliable, low-risk transition to AWS while preserving full compatibility with existing application dependencies.

• 99% Data Integrity Preserved: Achieved near-zero data loss through controlled, repeatable migration execution scripts and rigorous checksum-based validation across all systems.

• 80% Downtime Reduction: Incremental synchronization and optimized cutover strategy minimized downtime, keeping critical applications available throughout the migration process.

• 100% Application Compatibility Verified: Deep OS-level dependency mapping and validation ensured application consistency and compatibility across both on-prem and cloud environments.

• 3x Faster Risk Mitigation: Structured validation, rollback readiness, and phased execution significantly reduced migration risk compared to unstructured, single-pass approaches. 

Aziro helps organizations migrate legacy on-premises infrastructure to the cloud with minimal risk and disruption. Our teams perform deep OS-level assessments to understand dependencies, permissions, and configurations before migration begins, ensuring environments are recreated accurately in the cloud. From host-based data migration to incremental synchronization, we build repeatable processes that preserve data integrity and application compatibility throughout the transition.

Beyond execution, Aziro emphasizes structured validation at every stage, including pre-cutover checksum verification and post-migration functionality testing. This approach reduces migration risk while giving stakeholders confidence in application consistency and performance. Whether migrating a handful of servers or a complex multi-OS environment, Aziro delivers measurable improvements in data integrity, downtime reduction, and long-term reliability.