Discontinued and de-emphasized features in Exchange Server 2016.

Although Exchange Server 2016 includes several new features and functionalities, some features are discontinued or de-emphasized because they are replaced with newer technologies.

The following Exchange Server 2010 features are discontinued:

• The UM server role is replaced by UM services running on the Mailbox server role.
• The Hub Transport server role is now replaced by transport services.
• Exchange Management Console and Exchange Control Panel are both discontinued.
• Support for Microsoft Office Outlook 2003 and RPC over Transmission Control Protocol (RPC/TCP) client access is discontinued.

Migrate PST files to Exchange and Office 365

Steps:

1. Give import/export privilege to the user (Exchange > compliance > import/export)
2. Office 365> import>  upload file over the internet >
3. Download Azure AzCopy tool for Azure uploading ( Microsoft Azure AZCopy Tool)
4. Copy the secure storage account key
5. Use Microsoft Azure AZCopy tool to upload your data
6. create CSV file
7. 
   
8. uploading files
9. access to the mapping file
   
   Reference : https://support.office.com/en-us/article/Overview-of-importing-PST-files-and-SharePoint-data-to-Office-365-ba688e0a-0fcb-4bd7-8e57-2b669564ea84?ui=en-US&rs=en-US&ad=US&fromAR=1