Cloudflare vs Fastly
Cloudflare is a content delivery network (CDN) and Fastly is a content delivery network (CDN). Here's how they compare, how Tech Stack Detector detects each, and how many scanned websites use them.
CDN, DDoS protection, and security services.
- Category
- CDN
- Detection signals
- 4
- In our index
- 249 websites
- Official site
- cloudflare.com
Edge cloud platform and CDN.
- Category
- CDN
- Detection signals
- 2
- In our index
- 27 websites
- Official site
- fastly.com
Used together
1 website in our index use both Cloudflare and Fastly, so they aren't always an either/or choice.
How Tech Stack Detector detects each
Cloudflare
- HeaderCF-Ray header is Cloudflare-specific
- HeaderServer: cloudflare
- HeaderCF-Cache-Status header
- DNSCloudflare nameservers
Fastly
- HeaderFastly cache server header
- HeaderFastly request ID header
Websites using each
Frequently asked questions
What is the difference between Cloudflare and Fastly?
Cloudflare is a content delivery network (CDN) (CDN, DDoS protection, and security services), while Fastly is a content delivery network (CDN) (Edge cloud platform and CDN). Both are CDN technologies, so they are often considered alternatives.
Can a website use both Cloudflare and Fastly?
Yes. Tech Stack Detector detects each technology independently when you scan a site, so a single page can report both Cloudflare and Fastly when both are present.