Why we sit on Microsoft 365 Business Premium for nearly every client

This is the licensing question I get asked most often, usually by a finance director who's just looked at a renewal quote and noticed the line "Business Premium" against every user. They want to know whether Standard would do, given Standard is materially cheaper.

Almost always, the honest answer is no — and not because we're upselling. It's because the gap between Standard and Premium isn't features, it's security. And in 2026, the security side of Microsoft 365 is genuinely the part doing most of the work.

What each tier actually includes

What you get	Business Basic	Business Standard	Business Premium
Web and mobile Office apps	✓	✓	✓
Desktop Office apps	✗	✓	✓
Exchange / Teams / SharePoint / OneDrive	✓	✓	✓
Microsoft Defender for Business (EDR)	✗	✗	✓
Intune (device management)	✗	✗	✓
Entra ID Plan 1 (with conditional access, MFA enforcement)	✗	✗	✓
Microsoft Purview (information protection, DLP)	✗	✗	✓
Azure Information Protection (encryption / labelling)	✗	✗	✓
UK retail price per user / month (2026)	£5.60	£10.30	£18.10

So you're paying about £8 extra per user per month for Premium over Standard. For a 25-user business that's £2,400/year. The question is what that £2,400 buys you.

The four things you're actually paying for

1. Microsoft Defender for Business — proper EDR

This is the headline. Microsoft Defender for Business is the SMB-tier endpoint detection and response platform, formerly only available to enterprises buying E5. It actively monitors device behaviour, identifies suspicious patterns (not just known malware signatures), automates response, and gives the security team a unified view across the fleet.

Buying equivalent third-party EDR (CrowdStrike, SentinelOne, etc.) typically costs £4–£8/user/month standalone. Defender for Business is bundled into Premium. That alone often justifies the upgrade.

2. Intune — actual device management

Without Intune (or equivalent third-party MDM), you can't truly enforce a security baseline on devices. You can't ensure they're encrypted. You can't push policy. You can't wipe a lost device. You can't enforce that joiners get a properly configured laptop without it being a manual checklist.

Intune brings devices into the management plane. We use it to enforce BitLocker, force screen-lock timeouts, deploy applications, push security baselines, and remote-wipe lost or stolen devices. It also lets us run Cyber Essentials patching policy as actual policy rather than as hopeful written process.

3. Entra ID Plan 1 — conditional access

This is the one that matters most to me as a founder. Without conditional access, your MFA enforcement is essentially "users have to do MFA when they log in." With conditional access, it becomes "users have to do MFA when they log in from an unfamiliar location, on an unmanaged device, outside business hours, or to access sensitive resources — and otherwise the experience is frictionless."

That's not just a productivity story. It's the difference between MFA fatigue (where users approve every prompt because they get so many) and MFA signal (where every prompt is unusual enough to stop and think). We covered the wider problem of MFA fatigue attacks in detail recently — conditional access is most of the answer.

4. Purview and Azure Information Protection

This is the bit clients use least but compliance-conscious clients use most. Information protection lets us label sensitive emails and documents (Confidential, Highly Confidential, etc.), apply automatic encryption to anything with a credit card or NI number, prevent forwarding of sensitive content outside the organisation, and demonstrate compliance with UK GDPR obligations.

For accountancy practices, law firms, healthcare providers, and any business handling regulated data — this is no longer optional.

The Cyber Essentials angle

Here's the practical kicker: you cannot run a clean Cyber Essentials posture in 2026 without the tooling that comes with Business Premium. The five controls — secure configuration, access control, malware protection, patching, firewalls — all assume you have device management, EDR, and conditional access. With Standard, you're either bolting on third-party tools at greater cost, or you're leaving genuine compliance gaps that the assessor will find at renewal.

Most of our clients need Cyber Essentials for buyer or insurance reasons. Premium makes that achievable in weeks. Standard makes it a project.

The exceptions where we don't recommend Premium

I won't pretend it's universal. We have a small number of clients on Standard, and they're the ones where:

• The user genuinely doesn't access sensitive data. A receptionist who only uses the calendar and the front-of-house phone system, for example.
• The seat is shared/kiosk. A POS terminal or shared meeting-room device with no individual user data.
• The business is using a separate enterprise security stack. Rare, but some of our larger clients run third-party EDR + MDM and want the M365 layer to just be productivity.

For everyone else — partners, fee-earners, technicians, finance staff, sales — Premium is the answer.

The ROI conversation we have with finance directors

The £2,400/year upgrade for a 25-user business looks like an extra cost. It's actually displaced cost. You're either paying:

• £2,400 extra to Microsoft, with one bill, one renewal, one support contract, and a cleanly integrated security posture, or
• £3,000–£5,000 to assorted third-party security vendors, with multiple bills, multiple renewals, multiple support contracts, and a security posture that needs an MSP to glue it together.

Once you frame it as "displaced cost not extra cost", the conversation gets simpler. We'll happily walk you through what the all-in numbers look like for your specific user count and current stack. Drop us a note and we'll come back with a straight comparison.