You are the Office 365 administrator for your company. The company is running Microsoft Exchange Server
2007 with Service Pack 3 on-premises and has 500 mailboxes.
Management requests that you migrate all mailboxes to Office 365. You are researching the available migration types.
You need to generate a custom step-by-step checklist for multiple migration types.
Which tool should you use? is a web-based tool that asks you questions about your current environment and then generates a custom step- by-step checklist that will help you deploy Exchange Server for different types of scenarios. mailboxes you’d like to migrate and which method of migration you’d like to use. You can run the wizard multiple times selecting different options to generate checklists for different migration scenarios.

A.
Exchange Server Deployment Assistant

B.
Exchange Best Practices Analyzer

C.
Exchange 2013 Server Role Requirements Calculator

D.
Microsoft Remote Connectivity Analyzer

Explanation:

The Exchange Server Deployment Assistant is used to help you configure an Exchange Server deployment. It
The Exchange Server Deployment Assistant asks you questions about your current environment, how many
References: https://technet.microsoft.com/en-us/office/dn756393.aspx