I just did this for my work which changed over to Outlook. It was fairly painless. Go to settings/mail/click on exchange...it will as you your user name, password, domain and server which you will all need. These steps are by memory-so if I have forgotten steps, please anyone-add to.
You can look at the details of your account-whether you want to push your emails within certain intervals automatically- or "fetch". I chose to "fetch" since this would use less battery and I could manually fetch when I need to check my email updates. I also have a gmail account that is also on the ipad. So the inbox carries my outlook and gmail account by simply clicking the inbox to get to the appropriate account. Hope this helps.