Requirements to Migrate from Lotus Notes to Exchange Online

Looking for a list of hardware/software requirements to migrate Lotus Notes to Exchange Online.

If using the Quest tool to migrate Notes to EXOL,  do I need the setup Exchange servers on-prem and install the Hybrid Config Wizard (HCW) and open all the required firewalls/ports to allow connectivity between On-premises and Office 365? 

I have to present the requirements on Monday with diagrams, etc.  -- your assistance is much appreciated. Thanks.