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Amazon CloudFront: Delivering millisecond performance to global audiences

Networking & Content Delivery Blog

This article discusses recent performance improvements to Amazon CloudFront for delivering content to global audiences with millisecond latency.

  • CloudFront terminates TLS connections at edge locations, reducing handshake latency significantly
  • TLS 1.3 support to origins reduces handshake time by 36% with stronger encryption
  • Intelligent connection pooling uses TCP pools, HTTP Keepalive, and TLS reuse between cache layers
  • TCP Fast Open reduces connection establishment time by up to 25% between edge and origin
  • HTTPS DNS records enable protocol discovery during DNS resolution, reducing negotiation delays
  • Intelligent network routing continuously optimizes paths based on real-time performance experiments
  • Customers see over 30% improvement in first byte latency with CloudFront

CloudFront's latest enhancements combine global edge infrastructure, advanced protocols, and intelligent optimization to deliver faster, more secure content delivery for modern web applications.

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