The licence cost everyone quotes
Windows Server 2022 Standard retails at roughly R26,000–R30,000 per server licence (2-core pack pricing scales up from there), and that's before Client Access Licences (CALs) — which you need per user or per device connecting to the server, typically adding R600–R1,200 per seat. A 25-user business running two Windows servers with file sharing and a line-of-business app can easily clear R80,000–R120,000 in licensing alone before any hardware or support cost is considered.
Linux distributions we deploy — Ubuntu Server, Debian, Rocky Linux, AlmaLinux — carry no per-server or per-seat licence fee. That's the number most comparisons stop at, and it's the least interesting part of the real story.
Where the real 5-year cost difference shows up
1. Renewal and upgrade cycles
Windows Server licensing isn't a one-off cost — it recurs at every major version upgrade, and Microsoft's support lifecycle eventually forces that upgrade whether you're ready or not. Over five years, most businesses go through at least one forced upgrade cycle. Linux distributions like Ubuntu LTS or RHEL-derivatives (Rocky/Alma) offer 5–10 year support windows on a single release, with zero re-licensing cost to stay current.
2. Support contracts
Premier/Unified support contracts from Microsoft for a small server estate commonly run R15,000–R40,000+ per year depending on severity tiers. Open source support (from a provider like us, or community + vendor support for RHEL-based distros) is typically priced per server per month and scales far more predictably — and many issues are resolvable without a paid escalation at all, since the entire stack is inspectable.
3. The skills premium
This is the one nobody puts in a spreadsheet. Windows Server administrators with strong AD/Exchange/SQL Server skills command a real premium in the South African market, and turnover risk is high. Linux administration skills are broader and more transferable (the same skillset covers your servers, your containers, and increasingly your cloud infrastructure), which tends to reduce both salary pressure and single-point-of-failure risk on your team.
| Cost factor (25-user business, 2 servers, 5 years) | Windows Server | Linux |
|---|---|---|
| Licensing + CALs (initial) | R80,000 – R120,000 | R0 |
| Re-licensing / upgrade cycle | R30,000 – R60,000 | R0 |
| Annual support contract (×5) | R75,000 – R200,000 | R60,000 – R150,000* |
| Admin skills premium | Higher | Lower |
*Based on Openbyte's monthly SLA pricing — see our Rates page for current packages.
Where Windows Server still makes sense
We're not anti-Windows — if your business is deeply invested in Active Directory, Exchange on-prem, or a line-of-business application that's Windows-only, migrating off it purely to save licence cost is usually a false economy. The comparison matters most when you're making a genuinely open decision: a new server, a new branch office, or a platform refresh where both options are realistically on the table.
The honest bottom line
For general-purpose infrastructure — file/print, web, mail relay, VPN, monitoring, backup, databases — Linux typically comes out 40–70% cheaper over five years once you account for licensing, renewals, and support, without sacrificing reliability. The savings compound because Linux infrastructure tends to need fewer forced changes over its lifetime, not because it's "free."
Considering a platform decision for new infrastructure?
We'll give you a straight cost comparison based on your actual environment, not a generic spreadsheet.
