Microsoft 365 has become the default productivity platform for small and mid-sized businesses — and for good reason. Exchange Online, Teams, SharePoint, OneDrive, and the full suite of Office applications, all managed through a single cloud-based admin centre, provide a complete collaboration and communication infrastructure that would have cost dramatically more to run on-premise a decade ago. But a default Microsoft 365 deployment leaves significant security and productivity value on the table. Getting the configuration right from the start — or cleaning up a poorly configured existing tenant — makes a substantial difference.
Choosing the Right Microsoft 365 Plan
Microsoft 365 comes in several business tiers: Microsoft 365 Business Basic ($6/user/mo), Business Standard ($12.50/user/mo), Business Premium ($22/user/mo), and various Enterprise plans. For most small businesses, the decision comes down to Business Standard vs. Business Premium. Business Standard includes the full Office apps, Exchange Online, Teams, and SharePoint. Business Premium adds Intune (device management), Azure AD P1 (Conditional Access), Microsoft Defender for Business, and Azure Information Protection — all of which are significant security capabilities.
Business Premium is the right choice for any organisation that handles sensitive data, is subject to regulatory compliance requirements, or has employees accessing business resources from personal devices. The additional $9.50/user/mo over Business Standard pays for endpoint management and security tooling that would cost significantly more if purchased separately. For a 10-person team, the difference is $95/month for a materially stronger security posture.
Microsoft's non-profit pricing programme offers qualified organisations up to 10 donated Business Premium licences and heavily discounted pricing beyond that. Healthcare organisations should also evaluate Microsoft 365 Business Premium against HIPAA requirements — Microsoft provides a HIPAA Business Associate Agreement and the platform's security controls support compliant deployments when properly configured.
Quick Tips
- Do not purchase Microsoft 365 licences through a retail channel — work with a Microsoft Cloud Solution Provider (CSP) who can provide support and licence management
- Audit your current licence usage quarterly — unused licences for departed employees are the most common source of wasted M365 spend
- Business Premium's Intune licence is sufficient for most small businesses — there is no need to purchase standalone Intune or Defender unless you have specific enterprise requirements
Security Hardening Your M365 Tenant
A default Microsoft 365 tenant is not a secure Microsoft 365 tenant. The most important immediate security configuration is enabling Multi-Factor Authentication for all users — Microsoft's own data indicates that MFA blocks over 99.9% of account compromise attempts. Microsoft 365 Business Premium includes Conditional Access policies that allow MFA to be enforced contextually (e.g., required when accessing from outside the office network or from unmanaged devices).
Microsoft Secure Score is a built-in dashboard that measures your tenant's security configuration against Microsoft's recommended baseline and provides a prioritised list of improvements. A freshly created tenant typically scores in the 30–40% range. Reaching 70–80% Secure Score through straightforward configuration changes — enabling MFA, configuring anti-phishing policies, enabling audit logging, and disabling legacy authentication protocols — significantly reduces attack surface without adding user friction.
Email security deserves specific attention. Business Email Compromise (BEC) — where attackers impersonate executives or vendors in email to authorise fraudulent wire transfers — is the highest-dollar-value cybercrime category and disproportionately targets small businesses. Configuring DMARC, DKIM, and SPF records for your domain prevents attackers from spoofing your email address. Enabling Microsoft Defender's anti-phishing and anti-impersonation policies catches attacks targeting your domain.
Quick Tips
- Enable Security Defaults in Azure AD if you are not using Conditional Access — it provides baseline MFA enforcement at no additional cost
- Disable legacy authentication protocols (Basic Auth) in Exchange Online — they bypass MFA entirely and are a common attack vector
- Configure the Microsoft 365 Admin Centre's "Privacy and security" section to enable unified audit logging — required for incident investigation
Features Most Businesses Are Leaving Unused
Microsoft Teams is the most underutilised component of most Microsoft 365 subscriptions. Beyond basic chat and video meetings, Teams supports persistent project channels, file collaboration with real-time co-authoring, task management via Planner integration, and automation through Power Automate. Businesses that continue using email for internal project communication and shared network drives for file storage are paying for Teams capabilities they're not using.
SharePoint Online provides a scalable document management platform that replaces the need for an on-premise file server. Properly structured SharePoint libraries with appropriate permissions, version history, and metadata can replace a physical file server entirely while providing anywhere-access, granular permissions, and audit trails that a traditional file server cannot match. The migration from a file server to SharePoint Online is one of the highest-value infrastructure changes a small business can make.
Power Automate (formerly Microsoft Flow) enables non-developers to build automated workflows connecting Microsoft 365 services and hundreds of external applications. Common business automations include automatic SharePoint filing of email attachments, Teams notifications when a form is submitted, approval workflows for purchase orders, and automated onboarding tasks when a new user is created in Azure AD. These automations are included in most Microsoft 365 plans and require no coding to implement.
Quick Tips
- Migrate your shared drive to SharePoint before deploying Teams — Teams channels use SharePoint as their document storage backend
- Create a Microsoft 365 governance policy before rollout — deciding naming conventions, channel policies, and guest access rules prevents configuration sprawl
- Use Microsoft's Adoption Hub resources to drive user adoption — technology that employees don't use provides no ROI regardless of how well it's configured
Sources & References
Related Videos
Set up Microsoft 365 for Business
Microsoft · YouTube
Protect Your Business: 7 Security Best Practices for Microsoft 365
Microsoft 365 · YouTube
Written By
Eagletek Visions Tech Team
Our engineering team is composed of certified IT professionals with experience across managed IT, cybersecurity, cloud infrastructure, and systems architecture. Articles are reviewed for technical accuracy before publication.
Credits
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Header and inline images sourced from Unsplash — free-to-use photography under the Unsplash License.
Video Content
- “Set up Microsoft 365 for Business” by Microsoft · YouTube
- “Protect Your Business: 7 Security Best Practices for Microsoft 365” by Microsoft 365 · YouTube