Exchange Hybrid Deployment on Azure AD Connect

[norafify]

Hi Support, 

I have deployed Exchange Hybrid but I didn't tick option for Exchange hybrid deployment features in Azure AD Connect. All the mailboxes is on-premises. We configured exchange hybrid because we want Teams interact with exchange on-premises. It's compulsory to tick this option? what is the impact if we didn't tick this features?  

[#2]

Hello, well this isn't support. It's a community 🙂

You should read this https://docs.microsoft.com/en-us/microsoftteams/exchange-teams-interact and specifically the hybrid deployment.

[#3]

The "hybrid" option enables writeback of some attributes as detailed here: https://docs.microsoft.com/en-us/azure/active-directory/hybrid/reference-connect-sync-attributes-syn...
You want the checkbox enabled for better integration between the two orgs, including cross-premises permissions.

[#4]

Hello,

Ah yes Hi Community.

Yes I have read that link. So to meet the requirement still need to enable that features right?

[#5]

Meaning if all the mailboxes still on-premises we still need to enabled that features right? Is there any impact if I enabled that features during Office hours? Any recommendation?