map services optimization. HTTP/2

[KellyChan]

I ran google lighthouse on a javascript map page. and received a suggestion to use HTTP/2. 

Is there any configuration I can set on the client-side?

Would ArcGIS Online update to HTTP/2?

[SaurabhUpadhyaya]

Hi everyone @Kellychan @UndralBatsukh @JoelBennett @Noah-Sager, This is the very important suggestion given by google or other browsers to implement HTTP/2 in ArcGIS Server. 

I am ArcGIS Server(IIS) 11.1 how to implement this ? is anything need to change in ArcGIS Server Admin/ Web Adapter or anything else? Kindly suggest how can i implement this in deployed environment.