I have created an application for a company that I need to deploy. The application is for internal use only so it will not be available on the App Store. Do I need a UDID for each individual on whose device the app will be installed? That would be impossible since there are 500 employees. Does anyone have a good documentation or experience on deploying the iOS iPhone application using the Enterprise Developer Program only.
If you are trying to deploy applications to customers/users on a production/long term basis, you can deploy an applications outside the apple store in three ways:
In order to distribute an application this way, the application must have a special corporate signature, and each device must have a matching corporate signature installed manually.
The best overall explanation for the process is available at this link.
If you're just testing on a handful of test devices, then you I would suggest two approaches: a dev release to a test device follow step by step instructions here.
Or you can use a helper application to deploy a beta release: testflightapp.