Changing the default Zone AAM in SharePoint

Question

SharePoint Web App Provides 5 different Alternate access mapping Zone.
What is the best practice, is it the good practice to change the Default Zone of Web app in AAM.  

Answer 1

Hi Maruti
At its most basic level, AAMs are configuration settings set in SharePoint Central Admin that tells SharePoint how to map a web request to the correct web application so that SharePoint can respond with the correct content as URL of a web request received
by IIS is not the same URL that the end user entered in their web browser
Best Practices
Default and Intranet should always be used, the rest are of course optional, but whatever naming convention you use, be consistent!
Default: always the FQDN in the form of “http://WEBAPP.Company.com” (or “http://WEBAPP.domain.local” – whatever
your FQDN format happens to be )
Intranet: Just the name of the webapp itself in the form of “http://WEBAPP”  It is important to use a single
name, without any “.”s in the name, as some windows applications will see “.” in the address and will assume “Internet” zone for the address, which can lead to some interesting authentication issues with Microsoft Office applications.  
Internet: Almost always prefixed with "WWW” in the form of “http://www.WEBAPP.Company.com” – this identifies
the access URL as a public facing or externally accessible site.  
Custom:  I have never used this field for anything more than specialized one-off URL testing and sometimes for SSL
cert verification (which generally should go on the load balancer anyways) 
Extranet: Every company will be different, but I like to use the “PARTNERS” prefix, in the form of "http://partners.WEBAPP.Company.com”
Amit Kotha