Apache Traffic Server

Category - Web Servers, Reverse Proxy

The Apache Traffic Server (ATS) is a high-performance reverse proxy and forward proxy server. Formerly a commercial product, Yahoo! donated ATS to the Apache Foundation, and it is currently used by several major CDNs and content owners.

We have discovered 140,021 live websites that are using ATS.

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Technology usage statistics

Websites using ATS140,021 websites
Most popular in the country US
Market position in Web Servers#17
Market share in Web Servers0.16%
Most popular version6.2.1

Technology adoption

Recent changes in ATS usage. (See ATS Usage Changes report)
Websites that added ATS+2,235
Websites that dropped ATS-3,572
Websites that changed version of ATS264

Distribution by websites popularity

Apache Traffic Server detection in the top websites by popularity
Top 10k sites128 websites
Top 100k sites555 websites
Top 1m sites2,521 websites

Websites utilizing Apache Traffic Server

Top websites that use ATS

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Market Share

ATS market share within the Web Servers category

Geographical Distribution

Technology usage distribution by websites across the globe.

Alternative Technologies

Nginx: Total 32,420,844 domains found using Nginx
Apache: Total 29,619,716 domains found using Apache
Cloudflare Server: Total 6,873,571 domains found using Cloudflare Server
IIS: Total 5,310,708 domains found using IIS
OpenResty: Total 4,838,412 domains found using OpenResty
LiteSpeed: Total 3,569,276 domains found using LiteSpeed
Microsoft HTTPAPI: Total 1,053,636 domains found using Microsoft HTTPAPI
Pepyaka: Total 675,318 domains found using Pepyaka
Cowboy: Total 399,845 domains found using Cowboy
GHS: Total 303,498 domains found using GHS

Alternative Names

  • ATS


  • 3 (4 subversions, 112 domains)
  • 4 (3 subversions, 7 domains)
  • 5 (6 subversions, 536 domains)
  • 6 (6 subversions, 623 domains)
  • 7 (12 subversions, 647 domains)
  • 8 (10 subversions, 355 domains)
  • 9 (8 subversions, 281 domains)