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Question 49 of 50

Part 5: Back-of-the-Envelope Estimation & Production Calculations (44 - 50)

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System Design (50 Qs)•Part 5: Back-of-the-Envelope Estimation & Production Calculations (44 - 50)

Network Egress and Cloud CDN Cost Optimization Sizing.

In Simple Words: Cloud providers (AWS, GCP) charge heavily for outbound internet data transfer ($0.08–$0.09 per GB).

  • Routing static media (images, videos, JS chunks) through a CDN with high cache hit ratios ($> 95%$) cuts egress costs by up to $80%$ due to cheaper CDN bandwidth contracts.
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