IronSights

Microsoft 365 & cloud

Microsoft 365M365

Microsoft's cloud-based productivity and security platform, combining Office applications, Exchange email, Teams collaboration, SharePoint, OneDrive, and an integrated suite of security and compliance tools.

Also known asM365Microsoft 365Office 365O365

In plain English

Microsoft 365 is far more than email and Word. When properly configured, it includes enterprise-grade identity management (Entra ID), endpoint protection (Defender), email security (Defender for Office 365), data governance (Purview), and compliance tools — all managed from a single admin centre. Most Australian SMEs are paying for these tools but not using them.

Full definition

Most Australian businesses are already paying for Microsoft 365. Very few are actually using what they have paid for. The standard subscription includes identity management through , endpoint protection through Defender, email threat filtering through , and data classification through . These are not add-ons you need to buy separately. They are sitting in your tenant, switched off or misconfigured.

The security gap this creates is significant. A business running Microsoft 365 without properly configuring , , and Defender policies is paying for a security platform while leaving the front door open. A misconfigured Microsoft 365 tenant is one of the most common entry points seen in Australian engagements. Attackers compromise a single account, move through shared mailboxes and libraries, and exfiltrate data before anyone notices.

When Microsoft 365 is configured correctly, it covers several out of the box: MFA, application control for managed devices, and macro restrictions across Office applications. , included in higher-tier licences, maps your current configuration against frameworks like and the Essential Eight, so you can see exactly where gaps exist. The platform is already there. The question is whether anyone has turned it on properly.

Keep learning

More terms in the IronSights Glossary.