How to resolve DNS application name

we have CRM application running internally on w2k12 IIS server. To run the application, employees would have to enter:
http://<server-name>/CRM. I'd like to have the more friendly name http://crm.<mycomanyname>.com pointing to the same application.
How can I do that?

Thank you for your help.
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Naushad shaikhIT Consultant - Messaging SupportCommented:
you need to create DNS A record in local DNS server pointing to Application server .

given URL:- and i want to access same app with friendly name Mail than i will create A record with Mail and give same application server IP.

After this i can access same App with https://mail/owa

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Microsoft IIS Web Server

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