Cloud Migration: A Step-by-Step Guide for 2025
Planning to move to the cloud? Here is a practical guide covering strategy, costs, and common pitfalls to avoid.
Cloud Migration Done Right
70% of cloud migrations face delays or cost overruns. Here is how to avoid becoming a statistic.
The 6 Rs of Migration
Rehost (Lift and Shift): Move as-is. Fast but does not leverage cloud benefits.
Replatform: Minor optimizations during migration. Good balance of speed and improvement.
Repurchase: Switch to SaaS. Example: move from on-prem CRM to Salesforce.
Refactor: Rebuild for cloud-native. Most expensive but highest long-term benefit.
Retire: Shut down unused applications.
Retain: Keep on-premises (compliance, legacy reasons).
Choosing Your Cloud Provider
AWS: Most services, best for complex needs. Steeper learning curve.
Google Cloud: Best for data/ML workloads. Great Kubernetes support.
Azure: Best for Microsoft shops. Strong enterprise features.
Common Migration Mistakes
- Not calculating true costs (data transfer, support, reserved instances)
- Migrating without optimizing first
- Ignoring security and compliance requirements
- No rollback plan
Typical Timeline and Costs
Small migration (few apps): 1-3 months, $10,000-30,000
Medium migration: 3-6 months, $50,000-150,000
Enterprise migration: 6-18 months, $200,000+
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