If your business runs on Microsoft 365, a single local managed service can cover backup, security hardening and Cyber Essentials evidence — so you stop juggling separate tools and can focus on running your business. This article answers what your Microsoft 365 licence actually includes, what is still missing from a defensible setup, how it maps to the Cyber Essentials baseline, and what happens to your data without dedicated independent backup. The next step is a free Security Triage Call to map your current setup against that baseline.

Your Microsoft 365 licence already includes more security features than most SMEs realise — anti-spam, MFA, basic device management — but those features need configuring and maintaining. Business Premium adds Conditional Access, Intune device compliance, Defender for Business and Defender for Office 365 Plan 1. That is a practical floor for a genuinely hardened environment, but it does not automatically satisfy Cyber Essentials requirements or provide independent backup.

What Microsoft 365 Already Includes (That Most SMEs Don't Use)

Microsoft bundles a meaningful set of security features into every business subscription. You do not need to buy extra tools to get started.

Microsoft 365 Business Basic and Business Standard include:

• Exchange Online (business email)

• Office desktop or web apps

• OneDrive and SharePoint for file storage

• Built-in anti-spam, anti-malware and anti-phishing protection for email

• Security Defaults, which enforce basic multi-factor authentication (MFA) for all users

• Basic mobile device management

Microsoft 365 Business Premium adds:

• Microsoft Entra ID P1 (Conditional Access — policy-based sign-in controls)

• Microsoft Intune (device compliance and management)

• Microsoft Defender for Business (endpoint detection and response)

• Microsoft Defender for Office 365 Plan 1 (Safe Links, Safe Attachments, enhanced anti-phishing)

Business Premium is the practical floor where a genuinely hardened Microsoft 365 environment becomes possible. If you are on Business Basic or Standard, you have a security gap — not because the platform is weak, but because you are missing the controls that make it defensible.

The NCSC's guidance for SaaS customers is clear: you still need to configure, manage and maintain how your tenancy is used over time. The platform does not remove that responsibility. (National Cyber Security Centre)

The Kent SME Scenario: Why Local Context Matters

A business owner searching for "Microsoft 365 managed services" or "Office 365 security Kent" is usually looking for someone local who understands their specific situation. They are not comparing enterprise-tier solutions. They want to know:

• Is what I am already paying for enough?

• Do I need separate backup?

• Can someone local handle the security setup so my team can get on with work?

• How does this tie into Cyber Essentials?

That is the gap this article fills.

What Your Licence Does Not Cover

Even Business Premium leaves gaps that most SMEs need to address externally.

Backup and data recovery

Microsoft 365 provides platform-level retention features — the Recycle Bin, version history, litigation hold. These are not backup. A genuine backup requires independent storage outside the Microsoft 365 tenant, controlled by separate credentials, and not subject to the same ransomware propagation path.

If your credentials are compromised and a ransomware actor gains access to your tenant, a backup stored within that same tenant is reachable. Independent storage breaks that chain. (National Cyber Security Centre — backing up your data)

Email security beyond the baseline

Microsoft's built-in anti-spam and anti-malware policies are a reasonable starting point. They are not tuned to your organisation. Impersonation protection — which catches emails pretending to be your directors or suppliers — is a separate policy that needs configuring. BEC (business email compromise) remains one of the most common attack types against UK SMEs, and it succeeds where anti-impersonation has not been set up.

Joiner, mover and leaver processes

Microsoft 365 does not automate your HR workflow. When someone leaves, licences need to be reclaimed. Shared mailboxes need reviewing. Guest access needs auditing. Without a process, these accumulate silently and create both security risk and unnecessary licence costs.

Cyber Essentials evidence

Cyber Essentials requires you to demonstrate that your technical controls are in place, not just that they exist on paper. For a Microsoft 365 environment, that means showing:

• MFA is enforced for all users (including administrators)

• Devices are encrypted and managed

• Security updates are applied consistently

• Email filtering is configured

• Admin accounts are protected

Most SMEs cannot produce that evidence on demand. (National Cyber Security Centre — Cyber Essentials overview)

How a Managed Service Brings It Together

A well-run managed service for an SME does not add unnecessary tools. It configures what you already have, fills the gaps that matter, and produces the evidence you need for insurance and compliance.

Here is what that looks like in practice:

Standardisation. Every device joining your Microsoft 365 environment meets the same baseline — disk encryption, current patches, managed identity. No exceptions that nobody remembers agreeing to.

Security hardening. Conditional Access policies enforce sign-in rules. MFA is complete. Safe Links and Safe Attachments are active. Anti-impersonation protection is tuned to your domain and key contacts.

Backup with independent storage. Your Exchange, SharePoint and OneDrive data is backed up outside the Microsoft tenant. Restore testing happens on a schedule, not after an incident.

Cyber Essentials readiness. Your controls are documented, evidenced and regularly reviewed so that when a tender or insurance renewal arrives, you can show exactly what is in place and who owns it.

Local support. Look for a provider who understands your business context, can visit on-site if needed, and responds in business hours without routing you through a national call centre.

Next Steps

Understanding where you stand is the first step. If you want a clear picture of what your Microsoft 365 environment actually includes, where the gaps are, and what it would take to bring everything together, start with a free Security Triage Call. (Book here)

FAQs

Do you need separate Microsoft 365 backup?

Yes. Microsoft's built-in retention features are not a substitute for independent backup. If ransomware compromises your tenant, data stored within that same tenant is reachable. Independent storage breaks that chain and gives you a recovery option the attacker cannot touch.

Is Microsoft 365 Cyber Essentials compliant by default?

No. The platform provides the controls, but you must configure, document and maintain them. Cyber Essentials verifies that your technical controls are properly set — it does not certify the software itself.

How much Microsoft 365 security is already in my licence?

Business Basic and Standard include anti-spam, anti-malware, basic MFA and mobile management. Business Premium adds Conditional Access, device management, endpoint protection and advanced email security. Both benefit from proper configuration; neither is complete without it.

Can a local MSP deploy or move my 365?

Yes. A local MSP can handle migration, licence optimisation, security hardening, SharePoint and Teams restructuring, and ongoing administration — typically bundled into the same support contract that covers your wider IT estate.