Add your Exchange account
Tap Settings > Accounts and Passwords > Add Account > Exchange.
Enter your address
Enter your email address. You can also enter an account description.
Connect to the Exchange Server
Your iOS device automatically searches for your Exchange Server, which hosts your email account. By default, your iOS device sends your email address to Microsoft to discover your Exchange account information, and to check if your account uses multi-factor authentication. To bypass this, select Configure Manually.
If your account uses multi-factor authentication, you will be guided through a custom authentication workflow. Otherwise, enter your password. You might be prompted to enter additional server information.
If you need help, contact your Exchange Server administrator.
Sync your content
You can sync Mail, Contacts, Calendars, Reminders, and Notes. When you're finished, tap Save.
Edit your Exchange settings
Tap Settings > Accounts and Passwords, and select your Exchange account. You can also set up automatic out-of-office replies, and change how often you want Mail to sync. You can also tap your account name to change Advanced Settings like SSL and S/MIME.
Learn more about iOS deployment.