A Microsoft 365 migration is about more than moving email addresses. It is about building the agile engine that will drive your business forward in an era of AI and hybrid work. In 2026, outdated legacy solutions have reached their limit, and delaying migration increases both security risk and technical debt. Stratu ensures a structured transition to the cloud, combining technical precision with minimal disruption for your users.
We use advanced delta-migration tools so your employees can continue working while data is moved in the background. The final switch is typically completed seamlessly over a weekend.
We build security in from day one. Using Microsoft Entra ID as the control plane, we implement MFA and Conditional Access as a natural part of the migration.
A clean migration is essential for gaining value from AI. We clean up your data (ROT analysis) so Microsoft Copilot has the right information to work with from the outset.
In 2026, the threat landscape has escalated, with attackers deliberately exploiting vulnerabilities in older on-premises solutions. Microsoft has also removed many legacy paths to data and identities, making legacy IT extremely expensive to maintain.
The three biggest pitfalls of an unstructured migration:
Data chaos: Moving old problems into a new environment without cleaning them up first creates inefficiency and security gaps in SharePoint and Teams.
Identity failures: Without clear mapping of user permissions, sensitive data may become accessible to the wrong people after migration.
User resistance: If employees encounter technical barriers on Monday morning after the migration, productivity stalls and trust in the transformation disappears.
At Stratu, we treat migration as a journey with a clear destination: creating a single source of truth where your employees always have access to the right data.
We manage the entire journey across the Microsoft ecosystem:
Exchange Online: We ensure a controlled migration of mailboxes, calendars and archives, including X500 addresses so users can continue replying to historical emails without errors.
SharePoint & OneDrive: We transform your file sharing from classic paths into modern, responsive experiences while preserving metadata and version history.
Microsoft Teams: We handle the most complex task: migrating Teams channels, private chats and file-sharing structures so collaboration can continue uninterrupted.
A successful migration is 80% planning and 20% execution. We follow a proven process:
1. Audit and ROT analysis (Weeks 1–2) We scan your current environment. How much data do you have, and what is redundant, obsolete or trivial? We clean up before moving, reducing migration time.
2. Strategy and pilot group (Weeks 3–4) We choose the right method – cutover, hybrid or phased – based on your size and availability requirements. We then run a pilot migration with a small group of power users to validate the setup.
3. Bulk migration and cutover (Weekend) Once everything is tested, we move the majority of your data. We run a delta migration to capture the latest changes before directing DNS records to the new platform and going live.
During mergers and acquisitions, the need to consolidate two Microsoft 365 tenants is often urgent. It is one of the most technically demanding migration disciplines because domains cannot be shared between tenants, while preserving Teams chat history requires specialist tools.
We handle the technical complexities of tenant-to-tenant migration:
Coexistence: We ensure that employees across both tenants can find one another in the address book and schedule meetings from day one.
Domain Cutover: We coordinate the precise timing of domain transfers so that mail routing never stops.
Device Management: Using Microsoft Intune, we automate the transition of PCs and mobile devices so they connect to the new tenant without manual configuration.
When you outsource your migration to Stratu, you get more than a technician. You gain a strategic partner who stays with you throughout the journey.
Responsible digital growth: We combine deep technical expertise with a focus on responsibility and ESG values.
Clear responsibilities (RACI): We use a clear model in which we are responsible for technical execution and security configuration while you retain ownership of the business objectives.
Disaster recovery integration: A transformation is not complete without security. We integrate your new Microsoft 365 environment directly with independent Microsoft 365 backup, protecting your data against ransomware from the first second.
Complete the contact form below and one of our specialists will contact you.
Yes, of course. We handle the entire domain transfer and configure the required MX and SPF records so your email addresses remain unchanged and DKIM security is in place from the outset.
Teams is complex, but with the right tools we can migrate channels, files and memberships. Private chats can often be retained as searchable archive files so the history is not lost.
Although the tools are available, the details matter. A professional partner such as Stratu ensures you avoid Microsoft throttling and that all security settings are correct from day one. You avoid the risk of costly mistakes by leaving the task to specialists who have completed it for many similar companies.
A ROT analysis in Microsoft 365 is a process for identifying and removing Redundant, Obsolete and Trivial data from the company’s IT environment. The purpose is to reduce data volumes in SharePoint, OneDrive and Teams, lowering costs, improving security and optimising performance, particularly when using AI tools such as Copilot.
In a column in Ingeniøren, our CEO Jeppe Klestrup shares his thoughts on a growing challenge: cyber fatigue.
In the article, he writes:
"Cyber fatigue is a form of mental exhaustion that affects two levels. On one side are employees who face a constant stream of warnings, passwords and security requirements.
The result is not greater vigilance, but that people tune out and ignore warnings simply to get through the working day.
On the other side are decision-makers, including IT managers tired of constantly having to choose between security, operations and budgets."
– Jeppe Klestrup, CEO, Stratu
