Management and support
Managed Microsoft 365 for business
Microsoft provides the platform. Seintec manages, protects, backs it up and maintains it, with a technical team responsible for your tenant.
Request tenant auditThe starting point
Owning licences is not the same as having a managed Microsoft 365
A company can spend years paying for licences without ever having reviewed the tenant's security configuration, without control over which devices access corporate email, and without knowing what happens when someone accidentally deletes a shared folder. The platform works, but the responsibility for its configuration, security, and data remains with the client.
- User onboarding and offboarding without a clear procedure.
- Old accounts still active and inherited permissions left unreviewed.
- MFA applied only to a portion of the organisation.
- Personal devices accessing corporate email without control.
- Shared mailboxes and files with excessively broad permissions.
- Licensing misaligned with actual usage.
- Absence of external backup for tenant data.
- Email incidents that no one knows who to escalate to.
Our response
A team responsible for your tenant, from start to finish
Seintec takes administrative control of Microsoft 365 and treats it as another piece of critical infrastructure: identities in Entra ID, MFA and conditional access, device management with Intune, configuration of Exchange Online, Teams, SharePoint and OneDrive, periodic security posture reviews, external data backup, and end-user support. All with the same technical point of contact who manages your servers, your network, and your security.
Almost every company now operates on Microsoft 365, yet few have their tenant truly managed: unverified identities, inherited permissions, partial MFA, devices without policies, and a backup that no one has tested. Seintec takes over the daily administration of the platform and integrates it with the rest of your infrastructure.
Benefits
What you gain with Managed Microsoft 365
A single technical lead
The same team managing your infrastructure administers the tenant, avoiding the fragmentation of responsibilities between providers.
Identities under control
Onboarding, offboarding, and role changes follow a defined procedure, with periodic reviews of accounts and permissions.
More secure access
MFA and conditional access policies adapted to the company's reality, without hindering daily work.
Managed devices
Enrolment, compliance policies and corporate data protection for laptops and mobile devices via Intune.
Data backed up off-platform
External backup of email, OneDrive, SharePoint and Teams, with retention and granular recovery.
Optimised licensing
We review actual license consumption to ensure you pay for what you use with the most appropriate plan.
How we work
From legacy tenant to managed platform
- 01
1. Tenant audit
We review users, licenses, permissions, security settings, mail rules, devices and backup status.
- 02
2. Improvement plan
We prioritise findings by risk and impact, agreeing on an action plan with realistic timeframes.
- 03
3. Hardening and deployment
We apply MFA, conditional access, device policies, email protection and the agreed-upon remediations.
- 04
4. Backup and continuity
We activate external backup for tenant data and define recovery procedures.
- 05
5. Operation and support
We manage onboarding and offboarding, incidents, changes and periodic security and licensing reviews.
What is included
Service capabilities
- Tenant administration
- Global configuration, domains, organisational policies and environment documentation.
- Identities and access
- Entra ID, MFA, conditional access, groups, administrative roles and user lifecycle management.
- Exchange Online
- Mailboxes, aliases, distribution lists, shared mailboxes, flow rules and mail protection.
- Teams, SharePoint and OneDrive
- Site structure, permissions, controlled external sharing and file synchronisation.
- Intune and devices
- Device and mobile enrolment, compliance policies, encryption and corporate data protection.
- Migrations
- Transfer of mail and files from local servers, other providers or existing tenants.
- External backup
- Independent copy of tenant data with agreed retention and granular restoration.
- User support
- Assistance for end users regarding email, files, Teams, and platform access.
Why Seintec
Results, not promises
- We integrate Microsoft 365 with your network, your servers, and your security, not as an isolated island.
- We apply the same security practices as in the rest of the infrastructure we manage.
- We document the tenant configuration as well as the onboarding, offboarding, and recovery procedures.
- A single technical point of contact for the platform, devices, email, and data.
Frequently Asked Questions
Common pre-engagement questions
- Does Microsoft already back up my data?
- Microsoft guarantees service availability and applies limited bins and retentions, but the model is one of shared responsibility: the long-term protection of data is the client's responsibility. That is why we recommend an external and independent backup of the tenant.
- Can you manage our current tenant without migrating anything?
- Yes. We start with an audit of the existing tenant and, from there, we take over its administration. We only propose migrations when there is a technical or licensing reason that justifies it.
- Do you also sell the licences?
- We can manage the licensing and its periodic adjustment, or work with the licences that the company has already contracted.
- What does activating MFA involve for users?
- We plan the rollout by groups, communicate the change, assist with enrolment and define controlled exceptions for specific cases, ensuring that security does not interrupt operations.
Unsure about a technical term? Browse the IT Glossary
Related services
Microsoft 365 backup
External and independent backup of Exchange Online, OneDrive, SharePoint, and Teams, with granular recovery.
View serviceAntispam
Managed protection against spam, phishing, and malware.
View serviceCybersecurity
We shield your business so it never stops.
View serviceManaged IT Services
We keep your systems operational and failure-free.
View serviceNext step
Review your Microsoft 365 tenant
We analyse identities, permissions, security, devices and backups, and provide you with a prioritised improvement plan.