Cloud Migration Planning

Cloud Migration Planning

Table of Contents

• Overview
• When to Use
• Quick Start
• Reference Guides
• Best Practices

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:

# Cloud migration assessment toolfrom enum import Enumfrom typing import Dict, List, Tuplefrom 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
@dataclassclass 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:

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