We will know over time. HTTP/3 is fixing all shortcomings of HTTP/2, which was pretty flawed. It uses UDP though, and UDP itself can be blocked by many firew

We will know over time. HTTP/3 is fixing all shortcomings of HTTP/2, which was pretty flawed. It uses UDP though, and UDP itself can be blocked by many firewalls, and folks/companies have to update firewalls and routers for it to work properly. So, that's its major weakness (eg. some workplaces block all egress UDP packets). https://news.ycombinator.com/item?id=27402222 https://news.ycombinator.com/item?id=27402222 As the article says, HTTP3 is pretty fast when there are high latencies/high loss scenarios. It will be interesting to see how it performs in a mobile setting. 4G and 5G networks have their own/specific optimizations that are different than a desktop world. eg. http keep alives were never respected, etc. (connections would be closed if there was no continuous activity). But, given the test, it 'should' be much faster than http 1.1 One think is for sure: HTTP 1.1 is going to still be used, even 100 years from now. It is like FM Radio, which is both good enough for most cases, and very simple and convenient at the same time.