HTTP/2 is an upgrade to the standard web protocol that allows for faster page loads and better performance on mobile devices. It also makes it easier for developers to create applications that use multiple concurrent connections.
If you’re using WordPress, there’s a good chance that you’ve been asked to update your site to support HTTP/2. This means that your website will load more quickly and perform better when accessed through a browser.
HTTP/2 is an extension of the original HTTP protocol. It was developed by Google as part of its efforts to make web pages load faster. In addition to improving performance, HTTP/2 also allows websites to use multiple connections at once, which can improve reliability.
HTTP/3 uses QUIC and overcomes many of TCP’s limitations and brings those benefits to HTTP. When using existing HTTP/2 over TCP and TLS, TCP needs a handshake to establish a session between a client and server, and TLS also needs its own handshake to ensure that the session is secured. Each handshake has to make the full round trip between client and server, which can take a long time when client and server are far apart, network-wise. But, QUIC only needs a single handshake to establish a secure session.
Also, TCP is understood and manipulated by a myriad of different middleboxes, such as firewalls and network address translation (NAT) devices. QUIC uses UDP as its basis to allow packet flows in an enterprise or public network and is fully encrypted, including the metadata, which makes middleboxes unable to inspect or manipulate its details.
HTTP/3 streams are multiplexed independently to eliminate head-of-line blocking between requests and responses. This is possible because stream multiplexing occurs in the transport layer as opposed to the application layer like HTTP/2 over TCP. This enables web applications to perform faster, especially over slow networks and latency-sensitive connections.
Reference: https://aws.amazon.com/blogs/aws/new-http-3-support-for-amazon-cloudfront/
There are several benefits to using HTTPS3 instead of HTTP2. First, it provides better security. Because HTTPS3 encrypts data between the browser and server, hackers cannot intercept any sensitive information. This means that users will not need to worry about having their personal information stolen when visiting sites with HTTPS3 enabled. Second, it improves speed. Since HTTPS3 uses encryption, there is no need to wait for a connection to be established before sending data. This speeds up browsing because the user does not have to wait for the site to connect to the internet. Third, it makes it easier to track website visitors. With HTTPS3, tracking cookies do not work. This means that marketers will not be able to see who has visited their website.
If you are interested in learning more about how to use HTTPS3, check out our guide on how to enable HTTPS3 on your website. It includes instructions on how to set up SSL certificates and configure your web server to support HTTPS3.
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