HTTP/1.1 Legacy Protocol Causes Performance Degradation
6/10 MediumHosting platforms still using HTTP/1.1 instead of HTTP/2 or HTTP/3 result in performance penalties due to lack of multiplexing, header compression, and faster connection setup. This is a legacy infrastructure problem that affects page load times, especially on mobile or high-latency networks.
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Now TCP is burnt into the routers, firewalls, and home equipment, it's really hard to send something that isn't TCP (or UDP) over the network. TCP is also burnt into the operating systems too, it's impossible for applications to change TCP's behaviour to suit their needs.
If your hosting still uses HTTP/1.1, it's time to upgrade. HTTP/2 brought significant performance improvements, like multiplexing (many resources over one connection) and header compression, which reduce latency. HTTP/3 can improve page load times, especially on mobile or poor networks, thanks to zero round-trip handshakes.