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Planning Cloud Migration for Business-Critical Systems
Assessment, target architecture, data migration sequencing and rollback strategies for high-availability workloads.
Fastcurve Engineering12 min read
Migration is a delivery program, not a project
Business-critical migrations span quarters. Treating them as projects produces big-bang risk and brittle plans. Treating them as programs allows continuous shipping with measurable parity at every step.
The sequencing that holds up
- Assess and tag every workload by criticality, data gravity and downtime tolerance
- Define the target architecture and non-negotiable SLOs before moving anything
- Migrate stateless services first, stateful systems last
- Mirror production traffic to the new environment before cutover
- Keep rollback playbooks tested, not just documented
Cost shows up after the migration, not during
Cloud cost surprises arrive in the second quarter, when right-sizing, reserved capacity and observability spend reveal themselves. Bake FinOps practices into the migration, not into a follow-on project.
Key takeaways
- Run migrations as programs, not projects
- Stateless first, stateful last; mirror before you cut over
- Rollback playbooks must be tested, not just written
- FinOps belongs inside the migration, not after
Next step
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