Question 1 Option #1
Any comment?
Why the project to migrate mailboxes under M&A is so challenging
If two businesses merge, the two companies will likely share similar or similar areas they are interested in. However, from a technological perspective, they could differ fundamentally. Here are the main obstacles for IT professionals in managing any M&A project.
Your Exchange Servers could be hosted at different locations.
Some mailbox infrastructures for corporate use like Exchange are hosted on-premises. Some are outsourced to SaaS, while others are hosted within the cloud.
There are many versions of Exchange servers.
There are times when organizations have multiple versions, such as Exchange 2010 Exchange 2013 Exchange 2016 Exchange Online (independent Mail Server, or within Office 365) or Exchange 2019. So, transferring mailboxes between the different versions can be a nightmare for specific IT teams.
You've selected Office 365 as the ultimate place to store your mailboxes.
Many companies going through the M&A process are considering moving towards Office 365 as the ultimate solution. However, they could be hindered by circumstances like the necessity to complete Office 365 tenant to tenant migration or even migrate from existing Exchange into Office 365, or vice-versa.
You don't have the money to pay for any downtime.
If everything appears to be falling apart in any M&A "adventure," the experience of delays in delivering calendars and mailboxes is not acceptable. Unfortunately, businesses are affected in this way.
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