What Is a BYOD Policy and Does My Business Need One?

A robust BYOD policy covers which device types and operating systems are permitted, the MDM or MAM controls applied to corporate data, acceptable use rules, what happens to company data when an employee leaves, and liability for lost or stolen devices. It should also clarify what IT administrators can and cannot see on personal devices, as transparency builds employee trust and adoption.

Intune offers Mobile Application Management (MAM) that protects corporate data within specific apps without managing the entire personal device. Work emails, files, and Teams data are encrypted and can be remotely wiped without affecting personal photos or apps. Microsoft 365 has over 400 million paid commercial seats (Microsoft FY2025), making Intune the most widely deployed BYOD management platform for businesses on M365.

BYOD eliminates handset procurement costs, which can save £300–£800 per employee on device hardware alone. However, you still need MDM or MAM licencing, a clear support model, and potentially a monthly stipend for employees using their own devices. The total cost depends on your fleet size and security requirements, but most SMEs find BYOD reduces overall mobile spend by 30–40%.