Cloud migration remains one of the most requested services we deliver at Srijak. After completing over 40 migrations in the past three years, we have distilled our approach into a repeatable playbook that minimizes risk and maximizes velocity.
Assessment Phase
Every migration begins with a thorough assessment of the existing infrastructure. We map dependencies, identify stateful services, catalog data stores, and classify each workload by migration complexity. This phase typically takes two to four weeks depending on the size of the estate.
The Six R Framework
We categorize every workload into one of six strategies:
- Rehost — lift and shift with minimal changes
- Replatform — minor optimizations during migration
- Refactor — re-architect for cloud-native benefits
- Repurchase — replace with SaaS alternatives
- Retire — decommission unused workloads
- Retain — keep on-premises where it makes sense
Zero-Downtime Migration
The most critical aspect of any migration is data consistency. We use a blue-green deployment pattern combined with real-time data replication to ensure zero downtime during cutover. The old and new environments run in parallel until we have verified data integrity and performance benchmarks.
This playbook has been battle-tested across healthcare, financial services, and e-commerce platforms. The patterns are proven — the execution is where most teams struggle. That is where having an experienced partner makes all the difference.