Core concept
Bypasses internet routing after first hop. Consistent low latency. Fast failover if endpoint unhealthy.
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How it works
$0.025/hr + $0.015/GB (US). More than CloudFront but for non-HTTP (games, VoIP). CloudFront cheaper for HTTP static.
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Trade-offs + gotchas
Real-time apps (games, video calls). gRPC APIs. Non-HTTP protocols needing global perf. Multi-region failover with static IPs.