What are the options for providing Microsoft GAL contacts on iPhones?

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Options	Description	Application area	Click-to-Call	Caller recognition	Pros/Cons
CardDAV account ⭐️	Synchronizes GAL contacts directly to the iPhone via CardDAV. Distribution can be done via MDM solutions.	Companies with many users, centrally managed contacts	✅	✅	Automatic distribution Distribution e.g. B. via MDM solutions such as Intune, no user interaction necessary
Exchange Online	Synchronization of contacts from Exchange Online directly into the iPhone address book, including subfolders. Possible via Outlook app or account on the iPhone.	Companies with Microsoft 365 that want to synchronize contacts from personal Exchange mailboxes.	✅	✅	Permanent solution, integrates Microsoft 365, requires Exchange Online license per user, account must be added, with App: Must be activated manually
iCloud	Synchronizes contacts via Apple iCloud. Easy integration for Apple users with iCloud account.	Users who have already enabled iCloud to sync contacts.	✅	✅	Requires Apple ID and iCloud account

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