Enable Gzip compression in web.config

We can enable GZIP compression entirely in your Web.config. 

Why do we need GZIP compression ?

Minimize the total size the browser needs to download which would increase performance

Advantages of specifying in web.config 

•  If we are on shared hosting and can't configure IIS directly
•  want our config to carry between all environments we target.

<system.webServer>
    <!--Enable Gzip -->
    <urlCompression doStaticCompression="true" doDynamicCompression="true" dynamicCompressionBeforeCache="false" />
   </system.webServer>