Cloud Migration Planning
Table of Contents
Overview
Cloud migration planning involves assessing current infrastructure, designing migration strategies, executing migrations with minimal downtime, and validating outcomes. Support lift-and-shift, replatforming, and refactoring approaches for smooth cloud adoption.
When to Use
- Moving from on-premises to cloud
- Cloud platform consolidation
- Legacy system modernization
- Reducing data center costs
- Improving scalability and availability
- Meeting compliance requirements
- Disaster recovery enhancement
- Technology refresh initiatives
Quick Start
Minimal working example:
python# Cloud migration assessment tool from enum import Enum from typing import Dict, List, Tuple from dataclasses import dataclass class MigrationStrategy(Enum): LIFT_AND_SHIFT = "lift_and_shift" # Rehost REPLATFORM = "replatform" # Rehost with optimizations REFACTOR = "refactor" # Rebuild for cloud REPURCHASE = "repurchase" # Switch to SaaS RETIRE = "retire" # Decommission class ApplicationComplexity(Enum): LOW = 1 MEDIUM = 2 HIGH = 3 @dataclass class ApplicationAssessment: name: str complexity: ApplicationComplexity dependencies: List[str] estimated_effort: int # days business_criticality: int # 1-10 current_costs: float # annual // ... (see reference guides for full implementation)
Reference Guides
Detailed implementations in the references/ directory:
| Guide | Contents |
|---|---|
| Migration Assessment and Planning | Migration Assessment and Planning |
| Database Migration Strategies | Database Migration Strategies |
| Terraform Migration Infrastructure | Terraform Migration Infrastructure |
| Cutover Validation Checklist | Cutover Validation Checklist |
Best Practices
✅ DO
- Perform thorough discovery and assessment
- Run parallel systems during transition
- Test thoroughly before cutover
- Have rollback plan ready
- Monitor closely post-migration
- Document all changes
- Train operations team
- Maintain previous systems temporarily
❌ DON'T
- Rush migration without planning
- Migrate without testing
- Forget rollback procedures
- Ignore dependencies
- Skip stakeholder communication
- Migrate everything at once
- Forget to update documentation

