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AWS Migration

Recommendations for AWS Migration​

Migrating to AWS requires careful planning to ensure a smooth transition. Here are key recommendations:

1. Assessment & Planning​

  • Inventory Existing Infrastructure: Document all servers, applications, databases, and dependencies.
  • Define Migration Goals: Reduce costs? Improve scalability? Enhance reliability?
  • Choose a Migration Strategy:
    • Rehost (Lift & Shift): Quick but may not optimize costs.
    • Refactor: Modify apps for cloud-native features (e.g., serverless).
    • Replatform: Partial optimization (e.g., moving to managed databases).
    • Repurchase: Switch to SaaS alternatives (e.g., using Amazon RDS instead of self-managed MySQL).

2. Cost Optimization​

  • Use AWS Pricing Calculator to estimate expenses.
  • Reserved Instances (RIs) for long-term workloads (up to 75% savings).
  • Spot Instances for fault-tolerant, non-critical workloads.
  • Monitor with AWS Cost Explorer to avoid unexpected bills.

3. Security & Compliance​

  • IAM Best Practices: Least privilege access, MFA enforcement.
  • Encryption: Enable KMS for data at rest and TLS for in-transit.
  • Network Security: Use VPCs, Security Groups, and NACLs.

4. Performance & Reliability​

  • Multi-AZ Deployments for high availability.
  • Auto Scaling to handle traffic spikes.
  • CDN (CloudFront) for global low-latency delivery.

5. Migration Tools​

  • AWS Migration Hub: Track progress.
  • AWS Database Migration Service (DMS): Minimal downtime database migration.

6. Testing & Validation​

  • Pilot Testing: Migrate non-critical workloads first.
  • Performance Benchmarking: Compare before/after metrics.
  • Rollback Plan: Prepare for unforeseen issues.

7. Post-Migration​

  • Continuous Monitoring: Use CloudWatch for logs and alerts.
  • Optimization: Right-size instances, delete unused resources.