Recently, our company acquired another business, and we needed to merge their Office 365 data with ours. Since we didn’t want to spend money on third-party tools, I started looking for a manual way to do the migration. That’s when I found the Office365Solutions.org website, which had a detailed and free guide on how to perforom Office365 Tenant-To-Tenant Migration safely.The guide covered everything—moving emails, calendars, contacts, and OneDrive files using Microsoft’s built-in tools like PowerShell. The key steps included configuring both tenants, assigning permissions, updating DNS records, and verifying data after the migration.While this guide was completely free! With careful planning, we completed the migration without major issues or downtime.