You can send the links via email or any other means.
How Do I Share (Let Others See) My Outlook Folders (Inbox, Contacts, Calendar etc.)? If you want to share a calendar with internal uses, please follow the isntructions in this Kowledge Base Article: The functionality is available for Exchange 2013/2016/2019 accounts.Publishing Public Folder calendar is not supported.Publishing calendar with Editor permission level is restricted due to the nature of the shared hosted environment.
VIEW CALENDAR IN OUTLOOK 2016 ALONG WITH EMAIL FULL
Contact Support to enable other options ( Limited Details or Full Details) if necessary. By default, you can only choose Availability Only for publishing.To make a calendar available to people outside the organization, you can use the Publish a calendar feature. External users can view and subscribe to the calendar, however they are not able to edit it. Calendar sharing is only available for people within your organization.