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DeliverReal-time experiences at global scale
SecureProtect apps and APIs from AI-scale threats
DeployRun code milliseconds from your users
ObserveReal-time visibility, from origin to edge

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Professional ServicesExpert help to migrate or optimize your delivery service
Managed CDNFastly's managed cloud CDN deployed inside your own network
Managed Security24/7 expert-managed WAF, bot, and DDoS threat protection
Live EntertainmentReal-time monitoring & support for high-traffic events

Deliver fast, personalized experiences globally with Fastly CDN

Get everything you need from a modern CDN — from effortless scale and built-in security to programmable control and full visibility.

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High-performance streaming media

Fastly powers the world's leading media brands with an open edge cloud platform built to deliver flawless live and on-demand entertainment at any scale, to any screen, anywhere.

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Fastly vs. Cloudflare

See why enterprises are switching from Cloudflare to Fastly with 24% faster load times, 33% better TTFB, and stronger app security.

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A new architecture for the modern internet

Explore Fastly's global network — 622 Tbps of capacity, fewer, more powerful POPs, and sub-millisecond TTFB at the 99th percentile.

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Stephen Crim

Staff SRE

Stephen Crim is a Staff SRE at Fastly, with broad focus on platform performance and efficiency. He has spent the past 25 years building, administering, and helping people use systems at airports, universities, state agencies, and now the entire world.

An illustration of a keyboard with a lever in the middle and a hand pushing the lever forward

Request Collapsing Demystified Stephen Crim

Boost website performance with request collapsing! Learn how it improves efficiency, reduces origin load, and optimizes caching for a snappy user experience.

August 14, 2025

PerformanceCDN & Delivery+1