If you are looking for the best solution for Exchange to Exchange migration, the Shoviv Exchange Migration Tool is a reliable and efficient choice. This software allows seamless migration between different Exchange Server versions without data loss. It supports the migration of mailboxes, public folders, and archive mailboxes while maintaining folder hierarchy and data integrity. The tool offers advanced filters to migrate selective items based on date, folder, or item type. With an easy-to-use interface, even non-technical users can perform migrations smoothly. Additionally, it ensures minimal downtime and supports incremental migration for large Exchange environments.

More info - https://www.shoviv.com/exchange-migration.html

For drive migration - https://www.shoviv.com/onedrive-to-onedrive-migration.html