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    Nginx is most often used as a reverse proxy, for TLS, load balancing and HTTP/2

    [Citation Needed]

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      I don’t think it’s arguable that nginx is sometimes used as a reverse proxy (we use it as a load balancer in front of Java application servers at work, for instance), though I doubt anyone knows how often or what it’s proxying. (It might be possible to fingerprint the underlying server, which could give interesting results.) The author correctly observes that Server: headers don’t tell the full story, but as you note that observation is necessary but not sufficient for their conclusion.

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      Thanks for this article - it’s also interesting to compare it to NetCraft Server Survey who have been data mining the internet since 1995 :~)

      Especially when you compare it to the 2003 survey