Hybrid Migration from Exchange 2016 to office365

Hi Roy,

I noticed that you deleted the domain name in another old tenant and you cloud add the domain name successfully.

About shared mailboxes, you can migrate them via the remote migration like the screenshot below.

Here is a reference:

https://technet.microsoft.com/en-us/library/o365e_hrcmoverequest_fl312271(v=exchg.150).aspx

For the Distribution Groups, you can mail enable these groups and sync them to cloud. However, if your mailboxes are all in the cloud, we recommend you create distribution groups directly in cloud.

About the “Import user pst file”, this is another feature. If you have created mailboxes in cloud and have related pst files, you can use this feature to import files to related users.

Stage migration and Hybrid migration (remote migration) are different. Therefore, the answer is no. However, you can still move 25 users first if you want when using Hybrid. At that time, you keep some users on-premise and some users in cloud.

Best Regards,

Erick

Also, little confuse with these two articles

Import user pst file

https://support.office.com/en-us/article/use-network-upload-to-import-your-organization-s-pst-files-to-office-365-103f940c-0468-4e1a-b527-cc8ad13a5ea6?ui=en-US&rs=en-US&ad=US

Is that only for archived or live mailbox as well?

Or 

To create a staged migration batch

https://support.office.com/en-us/article/perform-a-staged-migration-of-email-to-office-365-83bc0b69-de47-4cc4-a57d-47e478e4894e?ui=en-US&rs=en-US&ad=US#prepareforcutover

So if i understand this correctly, we have both options to migration users? I can do stage with 25 user at a time if  I want to? We have 250 user with some huge mailboxes 50gb.

This is for current live mailbox?

Just want to make sure if we have both options then which is better to use?

Thanks

Regards

Roy

Thanks Eric,

Now once we done all the above steps, at the time of migrating 

Shared mailbox and distribution groups. 

This is the only good referce i can find. 

https://support.office.com/en-us/article/upgrade-distribution-lists-to-office-365-groups-in-outlook-787d7a75-e201-46f3-a242-f698162ff09f?ui=en-US&rs=en-US&ad=US#bkmk\_which

But it doesn't mention anything about shared mailboxes and external contacts.

How do we migrated them?

Hi Solution_ Pro, 

We need your tenant information and domain information to check from backend. Please provide the information via private message to protect your privacy.

Regards,

Joanne

ok thanks,

I am trying to add my email to get the invitation email but not getting any emails on my email or even that old email.

"Did you know? Other people in your organisation have already signed up with domain.com" email address. You need to sign up too then verify that you are the admin for the domain. We 'll send you an invitation and walk you through the process of becoming the admin"