Migration
Secure migration to suite:u without data loss
How the switch from Office 365 to suite:u succeeds
Vendor lock-in is one of the biggest strategic threats for small and medium-sized businesses. Many IT leaders want to leave US clouds or outdated local environments, but shy away from the operational risk: fear of data loss, downtime and uncontrollable consulting costs prevents the necessary step toward digital sovereignty.
UPONU takes this pain away from you. We don't just deliver software – we ensure the safe, smooth migration of your current environment to suite:u.

The drivers for a cloud exit are no longer just cost-related. Regulatory requirements under the European NIS-2 directive demand demonstrable cyber resilience. Sudden price dictates and the risk of account suspensions due to opaque US compliance rules are forcing organizations to act. Anyone without an exit strategy becomes dependent on individual providers. A cloud exit is active risk management.

Whether you still run on-premises servers (which must be kept continuously and resource-intensively up to date on security) or already work in pure online solutions: replacing these systems is a standardized process at UPONU.
How do you migrate groupware mailboxes to openDesk? We migrate not just simple emails, but also complex structures such as shared mailboxes, calendar sharing, global address books and distribution lists safely into the new system.
Readiness audit
We analyze your current groupware structure in depth (directory services, permission matrices, data volumes) to rule out surprises.
Proof of Concept (PoC)
Test migration of a defined key-user group to validate all workflows, permissions and client connections.
Delta synchronization
Existing data is mirrored to the new environment in the background via API interfaces. Through continuous delta syncs during the ongoing week, the target system always stays up to date while your team keeps working normally in the established systems.
Cut-over (go-live switch)
On the defined cut-over date (usually a weekend), the final sync takes place along with switching the DNS and MX records. Your employees log into suite:u seamlessly on Monday morning – completely without downtime for daily operations.
Our "Migration as a Product" approach makes the switch plannable.
Here's how the process works:
FAQ
Frequently asked questions
The duration correlates with the amount of data and the complexity of the permission structures. Thanks to our standardized PoC and delta-sync process, we significantly reduce project duration and operational risk compared to classic, highly customized IT projects.
Yes. Initial and ongoing data synchronization happens in the background at the API level, without affecting the performance or availability of the running systems.
No. Hybrid phases, co-existence scenarios or staggered migration of individual departments (e.g. starting with HR or R&D) can easily be mapped via shared-domain setups.
Do you have more questions? Contact us
