Enable Free/Busy information between the Office 365 users from two different tenants, when the Autodiscover of one of them is pointing On-Premise

Introduction: If your organization has 2 major tenants under which user population is getting migrated, since the users would be placed into 2 different tenants free/busy information sharing is not enabled by default. Following document introduces the options and steps which are needed in order to have the Free/busy information shared between 2 tenants.  …

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