Migrating G suite to Office 365

Hi Amr Khattab, see here for more information on new capabilities introduced last year for G Suite migrations to Office 365:

"Several weeks ago we added a new Microsoft 365 Roadmap item announcing our intent to add ability to migrate Google G Suite calendars and contacts to the ability to migrate mail to Office 365 using our native migration tools. We're excited to say that this functionality has started rolling out!" 

Introducing the new migration experience from Google G Suite

and the associated technical documentation:

https://docs.microsoft.com/en-gb/Exchange/mailbox-migration/perform-g-suite-migration

For more of a general overview, check out https://support.office.com/en-us/article/Get-ready-Move-your-business-to-Office-365-26cc8d54-ed32-4c03-9dd1-be68ba274a14