Microsoft 365 can become the center of a small business's daily work. Email, calendars, Teams, files, identity, device access, and collaboration may all depend on the same tenant. That convenience also means administration should be deliberate rather than improvised.
Identity and account administration come first
Every employee account becomes part of the security boundary. Microsoft 365 support should include a repeatable process for creating accounts, assigning the right licenses, enabling appropriate authentication, applying access policies where needed, and removing or preserving access when someone leaves.
- Use named accounts instead of shared personal credentials.
- Protect administrative accounts appropriately.
- Use multifactor authentication (MFA) for Microsoft 365 accounts, using Security Defaults or Conditional Access as appropriate for the tenant's licensing and requirements.
- Review old accounts, external users, and unnecessary privileges.
- Define what happens to email and files when an employee departs.
Microsoft provides Security Defaults as a baseline option for Microsoft Entra tenants, while organizations with Microsoft Entra ID P1 or P2 licensing can use Conditional Access for more granular sign-in policies. The right configuration depends on licensing, users, applications, devices, and operational requirements.
Licensing should match the work
Microsoft offers multiple business plans, add-ons, and security capabilities. More licensing is not automatically better. The useful question is which features the organization actually needs for desktop applications, email, device management, security, compliance, Teams, and other workloads.
Licensing should also be reviewed when roles change or employees leave so the business is not paying indefinitely for unused seats.
Exchange Online needs ongoing administration
Email support involves more than creating a mailbox. Domains, aliases, shared mailboxes, forwarding, anti-spam controls, mailbox permissions, retention decisions, and suspicious-account investigations can all become part of normal administration.
Teams, OneDrive, and SharePoint need structure
Collaboration tools are easy to start using and easy to let grow without a plan. Businesses should know where shared files belong, which information is personal versus team-owned, who controls access, and how former users are removed.
A simple structure is usually better than creating a large number of Teams, sites, folders, and permissions without clear ownership.
Version history, recycle-bin behavior, retention features, native restore capabilities, and Microsoft 365 Backup can all play a role. The business still needs to decide which workloads must be recoverable, for how long, and which failure or compromise scenarios the recovery plan must cover.
Security should be built into administration
Microsoft 365 security improves when identity, permissions, authentication, endpoint practices, and administrative roles are managed together. A security product cannot compensate for forgotten accounts, excessive privileges, weak sign-in practices, or unmanaged endpoints.
Onboarding and offboarding should be repeatable
A documented process reduces mistakes. New employees should receive the right accounts, groups, licenses, applications, and access for their role. Departing employees should have sign-in access blocked promptly while business-owned email and data are handled according to the organization's retention and transition needs.
Microsoft documents separate offboarding steps for blocking sign-in, preserving mailbox and OneDrive data, forwarding or converting mailboxes when appropriate, reassigning access, and eventually removing licenses or accounts. Retention behavior can differ depending on whether an account is merely unlicensed, deleted, subject to a retention policy, or placed on legal hold.
Migrations need more than mailbox movement
Moving to Microsoft 365 can involve DNS, identity, mail flow, historical email, shared addresses, aliases, desktop applications, mobile devices, files, Teams, and user communication. A migration plan should account for both the technical work and the disruption users may experience.
What should an IT provider help manage?
Depending on the agreement, Microsoft 365 support can include:
- User and license administration.
- Exchange Online and shared-mailbox configuration.
- Teams, OneDrive, and SharePoint support.
- MFA and identity-security configuration.
- Onboarding, role changes, and offboarding.
- Domain and DNS coordination for Microsoft services.
- Migration planning and execution.
- Troubleshooting desktop and mobile Microsoft 365 applications.
- Backup and recovery planning where additional protection is needed.
Valhalla IT handles Microsoft 365 work through our managed IT services and IT projects and consulting, depending on whether the need is ongoing administration or a defined migration, cleanup, or deployment.
Technical references & further reading
Microsoft 365 changes frequently, so this guide is checked against Microsoft's current administration documentation.