Introduction:
IONET, an MSP supporting a client in Colombia’s gold mining and precious metals industry, was engaged to address the challenges of operating within a shared Microsoft 365 tenant. The client needed to transition to a dedicated Microsoft 365 environment to gain greater control over user accounts, security policies, licensing, and Microsoft 365 services.
The migration required more than simply moving mailboxes. IONET needed to ensure that years of business-critical email data were preserved while keeping disruption to users to a minimum. Leveraging Stellar’s MSP Program and Stellar Migrator for Exchange, IONET migrated more than 90 Microsoft 365 mailboxes containing over 100 GB of mailbox data to the client’s dedicated Microsoft 365 tenant.
Background:
IONET, as the client’s managed service provider, led this migration project. IONET identified that operating within a shared Microsoft 365 tenant had limited the client’s control over users, security, licensing, and administration, creating the need for a more independent and scalable environment.
To address these challenges, IONET supported the transition to a dedicated Microsoft 365 tenant, with a focus on strengthening governance and security while ensuring that existing mailboxes and historical email data were migrated with minimal disruption to users.
“ Statement from the customer:
I recommend Stellar Migrator for Exchange for Microsoft 365 tenant-to-tenant migrations. It was easy to use, delivered reliable results, and Stellar's technical support was excellent throughout the project.
”
Impact on the Business:
This migration was more than a technical mailbox transfer. The client relied heavily on Microsoft 365 for day-to-day internal and external communication, making data preservation and business continuity critical to the project.
Before the migration, the key priorities were:
- Preserve complete historical mailbox data throughout the migration.
- Minimize downtime and disruption to business operations.
- Simplify the complexities of a Microsoft 365 tenant-to-tenant migration.
Any interruption to email services or loss of historical email data and business information could have affected employee productivity and day-to-day operations. IONET therefore needed a reliable migration solution that could support a secure, efficient transition while protecting the client’s business-critical mailbox data.
Attempted Solutions:
Before selecting Stellar Migrator for Exchange, IONET evaluated the capabilities needed to deliver a secure and efficient Microsoft 365 tenant-to-tenant migration for its client.
The migration solution needed to:
- Preserve complete mailbox history throughout the migration.
- Enable secure tenant-to-tenant migration between Microsoft 365 environments.
- Support batch mailbox migration for efficient project execution.
- Automatically map source and destination mailboxes to simplify configuration.
- Resume interrupted migration jobs without restarting the entire process.
- Provide real-time visibility into migration progress.
- Offer responsive technical support throughout the migration.
- Deliver an easy-to-use and cost-effective solution.
After evaluating the available options, IONET selected Stellar Migrator for Exchange for its combination of enterprise-grade migration capabilities, ease of use, cost-effectiveness, and dependable technical support.
Solution and Benefits:
Leveraging Stellar Migrator for Exchange through Stellar’s MSP Program, IONET successfully migrated more than 90 Microsoft 365 mailboxes containing over 100 GB of mailbox data from the client’s shared Microsoft 365 tenant to a dedicated environment.
The migration was completed in approximately two weeks as a single coordinated project. Batch mailbox migration, automatic mailbox mapping, resume migration, and real-time migration monitoring enabled IONET to manage mailbox transfers efficiently and maintain clear visibility throughout the process.
The solution was straightforward to install and configure, while clear implementation guidance and ongoing support from Stellar’s technical team helped IONET execute the migration smoothly.
Following the migration, the client gained greater administrative control over its Microsoft 365 environment, including users, licensing, security settings, and services. Historical mailbox data was preserved, while business continuity was maintained with minimal disruption to users.
Conclusion:
Through Stellar’s MSP Program and Stellar Migrator for Exchange, IONET delivered a successful Microsoft 365 tenant-to-tenant migration for its client—moving more than 90 mailboxes and 100 GB of business-critical email data in approximately two weeks.
The migration helped the client move from a shared environment to a dedicated Microsoft 365 tenant, providing greater administrative control while preserving historical mailbox data and supporting a more secure and scalable environment for future growth.
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