For most businesses, the operating system question doesn’t feel like a question at all, you buy Windows computers because that’s what everyone uses. But the choice between Windows, macOS, and Linux has real implications for software compatibility, hardware costs, support, and long-term flexibility. It’s worth understanding what you’re actually choosing between.
Windows
Windows is the dominant business operating system by a significant margin. Most business software is built for Windows first. Most IT support professionals are trained on Windows. Most managed service providers run their tools and remote management software on Windows endpoints.
Strengths:
- Broadest software compatibility, if a business application exists, it almost certainly runs on Windows
- Widest hardware choice across every price point
- Largest pool of IT support expertise
- Deep integration with Microsoft 365, Active Directory, and the broader Microsoft ecosystem
- Group Policy and enterprise management tools for businesses managing multiple devices
Weaknesses:
- Historically the most targeted platform for malware, though this gap has narrowed
- Requires more active management, updates, endpoint protection, policy configuration
- Licensing costs add up, particularly for organisations that need the full Microsoft 365 stack
Best for: Most businesses, particularly those using Microsoft 365, line-of-business applications, or any software that only runs on Windows.
macOS
Apple’s macOS runs exclusively on Apple hardware, MacBooks, iMacs, and Mac minis. You can’t legally install macOS on non-Apple hardware, which means the hardware and software decisions are bundled together.
Strengths:
- Strong build quality and longevity: Apple hardware typically has a longer usable life than equivalent-spec Windows machines
- Unix-based foundation makes it well-suited to developers and technical users
- Generally lower malware exposure than Windows, though this is increasingly targeted as Mac adoption grows
- Tight integration with iPhone and iPad for businesses in the Apple ecosystem
- Microsoft 365 runs well on macOS; most major business software has a Mac version
Weaknesses:
- Higher upfront hardware cost: Apple hardware carries a premium
- Some business software has no Mac version, or a Mac version that lags behind Windows
- IT management and remote management tooling is more mature on Windows; macOS management requires specific MDM tools
- Limited hardware choice, you’re buying Apple or nothing
Best for: Creative industries, development teams, businesses already in the Apple ecosystem, or organisations where staff preference for Mac is strong enough to justify the hardware cost.
Linux
Linux is an open source operating system available in many distributions: Ubuntu, Fedora, Debian, and others. It’s free, highly customisable, and widely used on servers. As a desktop operating system for business use, it’s less common but worth understanding.
Strengths:
- Free, no licensing costs for the OS itself
- Highly stable and secure; widely used for servers and infrastructure
- Excellent for technical users and developers
- Runs well on older hardware, extending the life of ageing machines
- No forced updates or built-in telemetry in the way Windows has
Weaknesses:
- Limited compatibility with mainstream business software, Microsoft 365 has no native Linux desktop client, Adobe Creative Cloud doesn’t run on Linux, and many line-of-business applications simply don’t exist for the platform
- Smaller pool of mainstream IT support expertise
- Steeper learning curve for non-technical staff
- Some tasks that are simple on Windows or macOS require command-line knowledge on Linux
Best for: Technical teams, developers, server environments, or specific use cases where Windows software compatibility isn’t a requirement. Rarely the right choice as a general business desktop OS unless your team has the technical depth to support it.
Side-by-Side Comparison
| Windows | macOS | Linux | |
|---|---|---|---|
| Software compatibility | Broadest | Good for major apps | Limited |
| Hardware choice | Wide | Apple only | Wide |
| Upfront cost | Low to mid | Higher | Low |
| IT support availability | Highest | Good | Limited |
| Security (desktop) | Moderate (with management) | Good | Good |
| Microsoft 365 | Full support | Full support | Web only |
| Best for | Most businesses | Creative/dev/Apple users | Technical/server use |
Can You Mix Operating Systems?
Yes, and many businesses do. A design agency might run Macs for creative staff and Windows for accounts. A software company might use Macs for developers and Windows for everyone else.
Mixed environments are manageable with the right tools, Microsoft 365 works across both platforms, and MDM solutions like Microsoft Intune can manage both Windows and macOS devices from a single console. The main overhead is support: troubleshooting and maintaining two platforms requires broader expertise than a single-platform environment.
What About Chromebooks?
ChromeOS (the operating system on Chromebooks) is a lightweight, browser-centric platform built around Google Workspace. It’s a legitimate option for businesses whose workflows live entirely in the browser and Google’s apps. We cover it separately in a later post in this series.
The Practical Answer for Most SMEs
If you’re starting from scratch or replacing ageing hardware, Windows with Microsoft 365 is the lowest-friction choice for most small businesses. The software compatibility, IT support availability, and management tooling are all strongest on Windows.
If your team has a strong preference for Mac, or you’re in a creative or technical field where macOS has genuine advantages, the hardware premium is often justified.
Linux as a primary business desktop makes sense only in specific circumstances, typically where technical expertise is in-house and software compatibility isn’t a constraint.