Why Migrate ERP to Cloud?
On-premise ERP servers face hardware failures, expensive maintenance, limited scalability, and disaster recovery challenges. Cloud migration provides high availability, automatic backups, elastic scaling, and global accessibility — while reducing total cost of ownership by 30-50% over 3 years.
Migration Phases
- Assessment: Audit current infrastructure, data volume, custom modules, integrations, and downtime tolerance.
- Planning: Choose migration strategy (lift-and-shift, re-platform, or refactor). Select cloud provider and instance types.
- Preparation: Set up cloud infrastructure (VPC, subnets, security groups, RDS). Test data migration with a dry run.
- Migration: Execute during low-traffic window. Migrate database first, then application, then DNS cutover.
- Validation: Run parallel for 1-2 weeks. Verify data integrity, performance, and user acceptance.
Zero-Downtime Strategy
Use database replication (logical replication for PostgreSQL) to keep the cloud database in sync with on-premise during the migration window. Switch DNS at the cutover point. Rollback plan: revert DNS to on-premise if issues arise.
Common Pitfalls
"The biggest mistake in ERP cloud migration is underestimating data migration complexity. Always add 30% more time than you think you need."