Microsoft 365 Business Premium vs Business Standard: Which Is Right for You?

Business Premium adds Defender for Business (EDR-level endpoint protection), Microsoft Intune for device management, Entra ID P1 for Conditional Access policies, and enhanced Purview data loss prevention. None of these are available in Standard. Only 40% of UK businesses have two-factor authentication enabled (DSIT 2025), and Premium's Conditional Access makes enforcing MFA straightforward.

The upgrade from Standard to Premium costs approximately £8 to £10 per user per month. For a 25-user business, that is £200 to £250 per month for integrated endpoint protection, device management, and Conditional Access. Given the average cost of the most disruptive breach is £3,550 (DSIT 2025), the security investment typically pays for itself after preventing a single incident.

You can, but the total cost of adding standalone EDR, device management, and identity protection tools individually almost always exceeds the Premium upgrade cost. Premium's advantage is that these tools are natively integrated with Microsoft 365, sharing threat intelligence and enforcing policies across email, endpoints, and identity from a single console.

Standard includes Exchange Online Protection for basic email filtering, baseline anti-malware, and spam filtering. However, it lacks advanced threat protection, endpoint security, device management, and Conditional Access. Microsoft 365 has over 400 million paid commercial seats (Microsoft FY2025), and Microsoft increasingly positions Premium as the minimum viable security tier for business use.