Cloud Migration Guide
Migrating legacy software to the cloud improves system reliability, scales resources, and reduces hardware maintenance costs. However, migrating without a clear strategy can lead to data loss and downtime. This playbook covers migration strategies, database transfers, and security setups.
Guide Index
Estimate Your Project
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Start Estimator →1. Migration Strategies: Rehost, Replatform, Refactor
Every cloud migration project starts with selecting a migration strategy based on your timeline and budget. - Rehosting (Lift and Shift): Moving applications to cloud virtual machines without code modifications. This is the fastest migration path but offers limited cloud benefits. - Replatforming: Making minor updates to run applications on cloud-managed services (like AWS RDS or ECS), improving database security and scaling. - Refactoring: Rewriting applications using serverless runtimes and microservices architectures to fully leverage cloud scalability, though it requires more development effort.
2. Database Migrations & Data Integrity
Migrating databases requires maintaining data integrity and minimizing downtime. We write ETL (Extract, Transform, Load) scripts to migrate data between databases. We perform mock migrations on staging databases to verify schemas, configure read replicas to sync data in real time, and execute final cut-overs during off-peak hours to avoid business disruption.
3. Cloud Security, IAM Rules, and Monitoring
Securing cloud environments requires a zero-trust model. We configure Virtual Private Clouds (VPCs), block public network access to databases, and manage permissions using Identity and Access Management (IAM) roles. We set up cloud logging (AWS CloudWatch) and configure alerts to trace database access, monitor CPU usage, and identify security threats in real time.
Implementation Checklist
Frequently Asked Questions
How do you minimize downtime during database migrations?
We use database replication tools to sync data in real-time between the legacy database and the cloud database, enabling a fast cut-over with minimal downtime.
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