CMMS and EAM software: what it is and how to choose
Before choosing maintenance software, it pays to know what an unplanned shutdown costs you today. Leadership's decision is choosing between a CMMS, an EAM or the ERP's maintenance module without overpaying or falling short.
A CMMS (computerized maintenance management system) is the software that schedules, assigns and records maintenance work: work orders, preventive maintenance, spare parts and each machine's history. An EAM (enterprise asset management) does that and also follows the asset throughout its life, from purchase to retirement.
A disclosure before we continue: Cyrrus doesn't resell licenses or take commissions from any vendor. That's why we can compare without preferences.
What is the difference between a CMMS and an EAM?
A CMMS focuses on the maintenance stage and is used mostly by maintenance and production teams, with the goal of avoiding unexpected downtime. An EAM spans the whole lifecycle and also involves finance, operations and management, because it includes planning for new assets, risk analysis and performance analysis. The products overlap and many vendors use the two terms interchangeably, so compare real functions, not labels.
| Option | Who uses it and what it covers | When it usually suffices |
|---|---|---|
| The ERP's maintenance module | Maintenance and finance on a single platform; integrated orders and costs | Mid-complexity operations that already have an ERP and prioritize a single platform |
| Specialized CMMS | Maintenance and production; scheduling, spare parts, history | Plants that clearly need to organize work and cut downtime, with fast implementation |
| EAM | Maintenance, operations, finance and management; lifecycle, risk and capital | High-cost assets, several plants or sites, regulatory or certification demands |
Evaluating a CMMS or an EAM?
We define what your operation needs, measure the cost of downtime and compare the alternatives with no vendor commissions.
- Maintenance and ERP integration requirements
- Independent comparison, no commissions
When is a CMMS enough and when is an EAM justified?
A full CMMS can be enough when the problem is execution: paper work orders, uncontrolled spare parts, reactive maintenance. An EAM is justified when leadership's question is about the portfolio: when to replace an asset, how much to invest in each plant, what risk to accept. As CMMS products add EAM-type functions the gap narrows, which is why a cost-benefit analysis makes sense before paying for the extra features.
What should leadership measure to justify the investment?
Before asking for demos, measure what you can't see today: what an hour of unplanned downtime costs on your critical lines, what share of work is preventive versus corrective, how much is spent on emergency spare parts and how many critical machines lack a reliable history. With that data the business case writes itself, and it also lets you measure the result a year later.
How does it connect to the ERP?
Maintenance consumes spare parts, generates purchases and charges costs to accounting. A poor integration forces double entry or manual reconciliation. Before choosing, define which system is the source of truth for the equipment master, the spare-parts inventory and costs, and who maintains the integration. If you haven't chosen the ERP yet, decide both together.
How do you choose maintenance software?
Start from your real operation: equipment criticality, number of plants, technical staff and how work is logged today. Ask for a demo with your own assets and test field use with two or three technicians on the device they will actually use. If you want to certify your asset management, the ISO 55000 family sets the framework: ISO 55001 establishes the requirements of an asset management system.
Get maintenance to use it
A maintenance system fails if technicians don't log their work. We manage the implementation and adoption.
- Implementation project management
- Role-based training and usage tracking
How we can help
At Cyrrus we define the requirements, measure the cost of downtime, compare the alternatives with no commissions and manage the implementation. Learn about our EAM selection and software selection.
If you're evaluating a maintenance system, request a free diagnostic session with our team.
30 years in strategy and IT: Oracle consultant, IT leader at PepsiCo Latin America, Covidien and Coremar, and founder of Cyrrus in 2017. MBA, Universidad del Norte.
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