It's called mod_rewrite. It's an apache extension that rewrites urls. In wordpress the option is called permalinks.
If you use any kind of other CMS as your website, then I'm sure someone will have written a plugin/extension for this already, or it's available in your admin panel as an option.

If it's a custom made website, you need to look into mod_rewrite itself and figure it out.

Thanks guys for the response, I will look into the mod rewrite. Do I have to do each url or is it a code that rewrites all the url strings? Also do I loose the old url?

You can rewrite them all at once. But as I said, if you are using a well known CMS or eCommerce website, it will most likely already be included as an admin option, or free download as an addon.
What CMS/eCommerce is your website based on?

Maybe there is a second option or some adjustments options you didn't see in the admin section?

There is not general code that can be implemented that works on all sites. It all depends on your filenames and php $_GET variables. If you do it manually, you would really look into some tutorials.

The solution entirely depends on what is generating those url's. You need to provide more details.

I don't believe anything changes as far as the role is concerned when you do a VIP swap. Rather, it alters the load balancer configuration.

So nothing happens in your app to cause it to change configuration. The only thing I can think of is that the URL changes between the two. You could implement code that chose one of two connection strings, based on the URL with which it was accessed (assuming that we're only talking about a web role), but it seems messy.

Fundamentally, I think the issue is that staging isn't a separate test environment; it's a stepping stone into production. Thus, Microsoft's assumption is that the configuration doesn't change.

You can find out more about "mod_rewrite". Good luck.

in asp.net you will be wanting to use the routing option, ive never used it for this type of application but its simple enough to do the following for example and change www.mysite.com/profile.aspx?id=48788398283 to www.mysite.com/profile/webpeon so I dont suspect it wouldn't be much harder to accomplish what you are after

There is a remapping.config file that has big list of url's like below and in the admin section has a check box for Allow to remap incoming urls (url rewrite). but when I check the box nothing happend. Is ther something I need to add to web.config to make this work?
<?xml version="1.0" encoding="utf-8" ?>
<urls>
<u o="office_supplies.*" n="d~c-office_supplies~b-24.aspx" />
<u o="office_basics.*" n="m~c-office-basics~b-212.aspx" />

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You can change url using mod rewrite rules in htaccess file. You can find many mod rewrite tutorials on web

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