We have build an enterprise iPad App and now we want to give it to our employees. Initially when testing, we used ad-hoc distribution collecting all the test device\'s UDID
You can use InstallFish.com for this.
It allows OTA distribution for both IOS and Android. It also has a feature to automatically get the UDID and create your own appstores.
You will still need to provision them via your enterprise account but it makes the whole process of OTA installs much easier, especially for enterprise distributions.