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Lesson 09: Cost Management: Optimizing the 7.5x Multiplier

Multi-Region Platform Engineering: AWS, Kubernetes, and Aurora at Scale​

Episode 09 of 16 | Duration: 16 minutes

Target Audience: Senior platform engineers, SREs, DevOps engineers (5+ years experience)

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What You'll Learn​

  • Four cost categories: Compute replication (2-3x), data transfer (4-5x), database costs (2-3x), operational overhead
  • Locality-aware routing: Keep data in same region as user, avoid cross-region calls, saves 90% on data transfer
  • Database right-sizing: Aurora read replicas vs DynamoDB on-demand, match workload to service
  • Reserved capacity planning: 1-year savings for stable baseline, on-demand for spikes
  • Real example breakdown: $112K → $36K through systematic optimization across all categories

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