The two categories get pitched as a maturity ladder, buy a CMMS when you're small, "graduate" to an EAM when you're serious. That framing sells upgrades. It doesn't describe what the software actually does.
The distinction is scope, not sophistication
A CMMS manages maintenance on equipment you already have: work orders, PM schedules, parts, and the history that accumulates from closing all of the above. Its horizon is the asset's operating life, from the day it's commissioned to the day it's replaced.
An EAM (enterprise asset management) system manages the full lifecycle: procurement and vendor selection, capital planning and budget approval, depreciation schedules that feed the general ledger, and disposal or resale when an asset is retired. It typically spans every site a company runs, because the questions it answers, "what's our total replacement liability across the network," "which plant's fleet is due for capital refresh," don't make sense scoped to one building.
A CMMS asks "is this machine running, and what did it take to keep it that way." An EAM asks "what do we own, what is it worth, and what should we do about it next." Both can track a work order. Only one of them can tell your CFO what your asset base is worth on the balance sheet.
| CMMS | EAM | |
|---|---|---|
| Core unit of work | Work order | Asset, across its full lifecycle |
| Typical owner | Maintenance manager | Finance and asset management, jointly with maintenance |
| Site scope | Usually one plant | Usually multi-site, often enterprise-wide |
| Covers procurement and capital planning | No | Yes |
| Covers depreciation and disposal | No | Yes |
| Feeds the general ledger | Rarely | Directly |
| What breaks if you're missing it | Reactive maintenance, lost history | Uncontrolled capital spend, no lifecycle visibility |
The decision rule
If your maintenance team operates a single site, your budget authority stops at OPEX, parts, labor, and contractor spend, and nobody downstream needs your system to compute depreciation, you need a CMMS. That's the majority of manufacturing plants, and it's not a starter product, it's the correctly-sized one.
If you operate more than one site, if finance consolidates capital budgets or depreciation schedules across those sites, or if the buy-new-versus-rebuild-versus-dispose decision runs through your system rather than a spreadsheet in accounting, you need an EAM. The tell is usually organizational, not technical: when finance asks to be a stakeholder in your maintenance software selection, that's an EAM conversation, not a CMMS one.
Plenty of plants run both: a CMMS at the site level for execution, feeding data up into a corporate EAM that finance and network-level operations use for planning. That's not double-buying, it's the two systems doing the two different jobs they were built for.
What the corpus shows, and doesn't
Our corpus holds 13 documented CMMS deployments, 12 of them running Fiix. Pro-Vac Fleet Services and Perth County Ingredients are the cleanest examples of a correctly-scoped CMMS decision: single-site or single-fleet operations, cutting fleet downtime 27% and reactive maintenance 54% respectively, entirely through better scheduling and tracking on equipment they already owned. No capital-planning layer needed, because none was being asked of the system.
The one genuinely multi-site case in that set is instructive about where the line moves: Barrett Steel connected 28 UK sites and reached a 90% proactive maintenance rate — still maintenance execution, still a CMMS job, because what was being consolidated was work orders and not capital.
We don't have an equivalent EAM story to point to. Our corpus of 835 published manufacturing AI case studies contains zero documented EAM deployments. That's worth saying plainly rather than papering over: EAM decisions in manufacturing are real and consequential, but they aren't showing up as AI-driven case studies the way maintenance-execution wins are. If you're evaluating EAM platforms for their AI capabilities specifically, treat every claim as unverified until you see a deployment, not a demo.
Where to go next
- If you've concluded you need a CMMS, what is a CMMS covers what it actually tracks and what its data is worth later.
- Predictive maintenance sits on top of whichever system holds your asset history. What predictive maintenance actually requires explains the prerequisite, and the Predictive Maintenance use-case hub has the full deployment list.
- Vendors active in this corpus, including the CMMS and operations-management platforms referenced above, are ranked with their evidence on the manufacturing operations management software hub.
- For the two results cited above, see Pro-Vac Fleet Services and Perth County Ingredients.
AI Roadmap — Eight workflows in your plant where AI would pay back this quarter. We know which. 12 pages, in 72 hours.