Most businesses have no central visibility over the devices accessing their systems. Here is what that means, why it matters, and how Microsoft Intune changes it.

 

 

Think about every device currently accessing your Microsoft 365 environment. Laptops, phones, tablets. Company-owned and personal. In the office, at home, on the road. Now ask yourself: how many of those devices have been updated in the last month? How many have the right security policies applied? And if one was lost or stolen today, what would happen to the company data on it?

For most small businesses, the honest answers to those questions are less comfortable than they would like. Device management is one of the most consistently overlooked areas of small business IT. And in a world where hybrid working is the norm and personal devices are used for work as a matter of course, the gap between managed and unmanaged creates significant and largely invisible risk.

This guide covers Microsoft Intune: what it does, why it matters, how it addresses the BYOD challenge, and what the difference between Business Premium and E5 means for device management in practice.

 

 

 

What is Microsoft Intune?

 

Microsoft Intune is a cloud-based device management platform included with Microsoft 365 Business Premium. It gives businesses central visibility and control over every device accessing their Microsoft 365 environment from a single dashboard, regardless of where that device is located or who owns it.

For businesses managing a hybrid or remote team, this changes the device security conversation entirely. Rather than hoping that individual team members are keeping their devices updated and compliant, Intune enforces standards automatically across every enrolled device.

 

 

What Microsoft Intune actually does

 

In practical terms, Intune provides five core capabilities that address the most common device management gaps in small business IT.

Compliance visibility. Every enrolled device has a compliance status that is visible at a glance and updated continuously. Up to date or out of date. Policy compliant or non-compliant. Encrypted or unencrypted. Rather than discovering a device is running outdated software during a security incident, Intune surfaces that information before it becomes a problem.

Automated patch management. Software updates are pushed to every device automatically without requiring individual users to remember to install them. The security gap created by the “remind me later” habit, one of the most common entry points for attackers, is closed by default rather than managed by exception.

Consistent policy enforcement. Security policies apply to every device regardless of where it connects from. A device used in the office and a device used from a coffee shop operate under the same security standards. The location of the device is irrelevant to the protections applied to it.

Remote application deployment. Applications can be deployed to devices remotely without physical access to the device. New starters can have every required application installed and configured before their first day without anyone needing to handle the device in person.

Remote wipe. If a device is lost or stolen, company data can be wiped from it immediately from the Intune dashboard. No physical access required. No waiting for the device to be returned. The data is removed the moment the command is issued.

 

 

 

The BYOD challenge

 

Bring Your Own Device is the reality for most small businesses. Team members use personal laptops and phones for work because it is convenient and cost-effective. The security challenge is that personal devices sit entirely outside the business’s security perimeter unless something is in place to manage them.

Company emails on a personal phone. SharePoint files cached on a personal laptop. Teams messages stored on a device the business has no visibility over and no control of. When the person who owns that device leaves the organisation, what happens to all of it?

Without device management in place, the honest answer is that nobody knows. The data may remain on that device indefinitely. There is no remote wipe capability. No audit trail of what was accessed. No way to contain the risk after the fact.

This is a more significant exposure than most businesses realise. A former employee retaining access to cached company files, emails, and contact data is not a theoretical risk. It is a common consequence of an informal offboarding process that does not include device management.

 

 

 

How Microsoft Intune addresses BYOD

 

Microsoft Intune addresses the personal device challenge through a capability called Mobile Application Management. Rather than managing the entire device, MAM applies security policies specifically to company data and applications on a personal device, leaving everything personal entirely untouched.

In practice this means company email can be encrypted and access-controlled. SharePoint and OneDrive data can be protected by policy. Teams conversations can be governed. None of this touches personal photos, messages, or applications on the same device.

And when someone leaves the organisation, company data can be wiped from their personal device remotely while everything personal remains completely intact. The individual keeps their device and their personal data. The business keeps control of its own.

For businesses where BYOD is the norm, Mobile Application Management is the technical control that makes it a manageable arrangement rather than a standing security risk.

 

 

 

Business Premium vs E5: what changes for device management

 

At Microsoft 365 Business Premium, Intune provides device enrolment, compliance policies, remote wipe, application management, and automated update deployment. For the majority of small businesses this covers the core device management requirement comprehensively.

At Microsoft 365 E5, two significant additions change the capability substantially.

Microsoft Defender for Endpoint integration. At E5, Intune integrates fully with Microsoft Defender for Endpoint, creating a joined-up endpoint security platform rather than two separate tools operating independently. A device flagged as compromised by Defender can be automatically quarantined by Intune without any manual intervention required. The response to a detected threat is automated and immediate rather than dependent on someone reviewing an alert and taking action.

Microsoft Endpoint Analytics. E5 adds advanced visibility into device performance across the organisation. Boot times, application reliability, hardware health indicators, and proactive recommendations for improving the end user experience. For businesses managing larger device fleets, or where device performance directly affects team productivity, this layer of insight is genuinely useful beyond the security use case.

For businesses handling sensitive client data, operating in regulated environments, or working towards contracts that require demonstrable endpoint security controls, the step up from Business Premium to E5 is worth evaluating properly rather than dismissing on cost grounds alone. When compared against the alternative of a separate endpoint security product, the incremental cost of E5 over Business Premium is often more competitive than businesses expect.

 

 

 

Five signs your devices are not properly managed

 

If your business has never formally addressed device management, the following indicators are worth checking honestly.

Software updates are deferred indefinitely. If your team members routinely dismiss update prompts because there is no policy enforcing installation, every device is accumulating unpatched vulnerabilities.

There is no central visibility over device health. If nobody in your business could tell you at a glance which devices are compliant and which are not, that visibility gap is a risk.

Personal and work data are mixed without separation. If company emails and files sit alongside personal content on the same device without any policy separation, the data is exposed to whatever risks that personal device carries.

There is no way to remotely wipe a lost or stolen device. If a device went missing today and the only option was to hope it was not found by someone who could access it, that is a significant gap.

Security policies vary across the team. If individual habits rather than enforced standards determine how devices are secured, the security posture of the organisation is only as strong as the least security-conscious team member.

 

 

 

Getting started with Microsoft Intune

 

The most common barrier to Intune adoption for businesses on Business Premium is simply not knowing it is available. The licence is there. The capability is there. Getting started is a matter of enrolling devices, defining compliance policies, and configuring the update and application management rules that fit the way the business operates.

For a business without a large or complex device fleet, this is typically a manageable project rather than a significant undertaking. The businesses that have implemented Intune consistently describe the same outcome: visibility and control they did not know they were missing until they had it.