>>>Hi,
>>>
>>>I have a customer where they use several of my ASP.NET applications (it is a large organization with multiple sites). I have always set each ASP.NET application as a separate site. One IT person didn't like it and here is what he did:
>>>1. He created one site, lets call it 'DmitryApp_Multi_App'
>>>2. He created a bunch of applications under this site. E.g. "Site1_App", "Site2_app" and so on.
>>>3. Then when the main page from any of the Sites is to be used (URL) here is way he shows it (and it works):
>>>
>>> http://servername.theirorganizationname.org/Site1_app/MainPage.aspx
>>>
>>>I can't figure out and hence my question, how and where did he specify the part 'servername.theirorganizationname.org' ?
>>>
>>>TIA
>>
>>After I read on DNS, I would like to ask to confirm that my understanding is correct (and please correct me if I am wrong).
>>
>>Following the example above.
>>
>>1. On the customer Web Server I can get to the main page of, say, Site1_app using the following URL:
>>http://servername/Site1_app/MainPage.aspx
>>
>>2. The IT manager showed me that I can get to the same page as:
>>http://servername.theirorganizationname.org/Site1_app/MainPage.aspx
>>
>>Does it mean that he entered in the DNS Manager of their network a "map" (I am sure there is a correct term but I don't know it) that says
>>"servername.theirorganizationname.org" = "servername" ?
>
>'theirorganizationname.org' will be the external DNS which would map to the IP address of the server.
>'servername' is a sub-domain of that server so the server is responsible for mapping that to another address.
>

These are the points I don't understand (sorry).
1. I don't understand the word 'external' in this context
2. When you are saying 'which would map to the IP address of the server', is this a manual entry by the IT manager? or it is automatically done since this server is on the network of the organization name 'theirorganizationname.org'

The reason I am asking is as follows:

I have another customer where they also use several of my web applications. And I want to emulate this situation so that this 'other' customer would have URLs follows:

http://ServerName.AnotherCustomers.org/Site1_app/MainPage.aspx

I understand the 'ServerName' part of the URL because this is simply the web server name. But where do I enter the 'AnotherCustomer.org'?

Thank you (and sorry for being slow to understand).