There are only two processes to render a webpage completely when using HTTP/2. The largest changes that are noticeable from HTTP/2 are those around security. Websites that use HTTP/2 will have more security, faster load speeds, and less strain on the servers that host those web pages. Each time that a webpage request was made with HTTP/1.1, the page could only load one request per connection.
When too many requests are made at one time, performance suffers. The multiplex made available through HTTP/2 eliminates the one-to-one connection and allows multiple messages to transmit at one time. Using version 1.1 creates unnecessary complications and it is time to replace it with a flexible and current version.
Infographic by: www.amberddesign.com