Cloud Migration Planning Guide
Step-by-step framework for planning a successful cloud migration, from assessment through optimization.
Moving to the cloud is one of the most significant infrastructure decisions a business can make. This guide provides a structured approach to planning your migration, helping you avoid common pitfalls and set your organization up for long-term success.
Phase 1: Assessment & Discovery
Before moving anything, you need a complete picture of your current environment and requirements.
- Inventory all applications, data, and dependencies
- Assess current infrastructure costs (hardware, maintenance, power, space)
- Identify compliance and regulatory requirements
- Document performance requirements and SLAs
- Evaluate application cloud-readiness
- Identify stakeholders and their concerns
Phase 2: Strategy Selection
Choose the right migration approach for each workload. The '6 Rs' framework helps categorize your options.
- Rehost (Lift and Shift): Move as-is to cloud infrastructure
- Replatform: Make minor optimizations during migration
- Repurchase: Move to a different product (often SaaS)
- Refactor: Re-architect for cloud-native benefits
- Retain: Keep certain workloads on-premise
- Retire: Decommission applications no longer needed
Phase 3: Planning & Design
Design your target cloud architecture and create detailed migration plans.
- Select cloud provider(s) based on requirements
- Design target architecture with security in mind
- Plan network connectivity and hybrid scenarios
- Define identity and access management strategy
- Create data migration strategy and timeline
- Develop testing and validation plans
Phase 4: Migration Execution
Execute the migration in phases, starting with lower-risk workloads to build confidence.
- Set up cloud landing zone and security controls
- Migrate pilot workloads first
- Validate functionality and performance at each step
- Execute data migration with minimal downtime
- Update DNS and routing as needed
- Document issues and lessons learned
Phase 5: Optimization & Operations
Migration is just the beginning. Optimize for cost, performance, and operational excellence.
- Implement monitoring and alerting
- Right-size resources based on actual usage
- Enable auto-scaling where appropriate
- Review and optimize costs monthly
- Train team on cloud operations
- Establish ongoing governance processes
Key Takeaways
Thorough assessment prevents costly surprises during migration
Not everything should move to the cloud - be strategic
Security must be designed in from the start, not added later
Pilot migrations build confidence and reveal issues early
Cloud migration is a journey, not a destination - continuous optimization is key