Microsoft 365 management means configuring and maintaining your accounts, licences, email, Teams and security settings so the platform is safe and works smoothly for your team. Out of the box, Microsoft 365 is flexible, not locked down. Most of the protection you need has to be switched on and kept in order.
Why default Microsoft 365 settings are not enough
Your Microsoft 365 tenant holds email, files, calendars and often your most sensitive client information. A single compromised mailbox can be used to send fake invoices to your customers. Reviewing your configuration is one of the highest-value IT tasks a business can do.
Microsoft 365 security settings to check first
Multi-factor authentication. Require it for every user, with extra care for administrators.
Admin roles. Keep the number of global administrators small, and use separate admin accounts rather than everyday logins.
Email protection. Enable anti-phishing and anti-malware policies, and review mail forwarding rules, which attackers often create to quietly copy your email.
Sign-in alerts. Get notified of unusual locations or impossible travel so suspicious access is caught early.
Device management. Make sure laptops and phones that connect to company data are updated, encrypted and can be wiped if lost.
Sharing settings. Control who can share files externally in SharePoint and OneDrive.
Backup. Microsoft keeps the service running, but you remain responsible for your data. Keep an independent backup of mailboxes and files.
Where Microsoft Defender fits
Microsoft Defender provides endpoint, email and identity protection. Used properly, it gives visibility of threats across devices and mailboxes. The value is in the setup and monitoring, not just the licence.
Licences and the user lifecycle
Good management also saves money: removing unused licences, setting up new starters consistently and closing accounts promptly when people leave. Offboarding is one of the most overlooked security gaps.
What managed Microsoft 365 looks like
Under our managed IT services, we handle user accounts, licences, shared mailboxes, Teams and security configuration for a fixed monthly fee per user, alongside helpdesk support and 24/7 monitoring. We specialise in the Microsoft ecosystem, including Microsoft 365, Azure, Defender and Teams.
Want to know how your tenant measures up? Book a free IT health check or read about our managed IT services.
Related reading: Cyber security for small business in Australia: a practical checklist
FAQ
Is Microsoft 365 secure by default?
It has good built-in protections, but important controls such as MFA and tailored email policies need to be configured.
Does Microsoft back up my data?
Microsoft keeps the service available, but that does not replace a dedicated backup for accidental or malicious deletion.
Who should manage Microsoft 365 in a small business?
Either a trained internal person or a managed IT provider. It should not be left to whoever set it up first.
