Open vs Closed Manufacturing: What's the Difference?
An open manufacturing architecture prioritises interoperability and the ability to integrate technologies from different suppliers, while a more closed architecture relies more heavily on proprietary technologies, interfaces or a defined supplier ecosystem.
Neither approach is automatically better. A tightly integrated system from one supplier may reduce some of the work required to connect its individual components. A more open architecture can give manufacturers greater freedom to combine technologies, but somebody still has to make those technologies work together.
In practice, most manufacturing systems sit somewhere between the two extremes. Understanding where is more useful than attaching an 'open' or 'closed' label to the factory.
What do open and closed mean in manufacturing?
There is no universal industry classification that divides manufacturing systems neatly into 'open' and 'closed'.
Here, we're using the terms to describe different approaches to manufacturing architecture.
A more open architecture uses documented interfaces, standards or other mechanisms that allow equipment, software and data from different sources to work together. The aim isn't necessarily to remove proprietary technology. It's to avoid making the wider manufacturing system unnecessarily dependent on it.
A more closed architecture places greater reliance on proprietary components, interfaces or systems designed primarily to operate within a particular technology or supplier environment. Machines, software, data or workflows may work extremely well together within that environment, but introducing technology from elsewhere can require additional integration or may not be supported.
This distinction isn't something manufacturing has invented for the sake of a new label. Interoperability between vendor-specific hardware and software has been a long-standing manufacturing problem. Open and consensus-based standards are one way manufacturers and technology providers can improve information exchange between otherwise heterogeneous systems.
Open and closed manufacturing exist on a spectrum
A factory isn't open simply because it uses an open standard somewhere. Nor is it closed because it contains proprietary equipment.
A manufacturer might, for example, use CNC machines from several suppliers but depend on one proprietary system to manage production data. Another might use machines from one manufacturer while exchanging product and process information through neutral standards.
Both contain elements of openness and dependency.
That's why it is more useful to ask where dependencies exist than whether a factory qualifies as open or closed.
Can another machine be introduced?
Can information move between systems?
Can production data be exported in a usable form?
Can one piece of software be changed without rebuilding the surrounding workflow?
Those questions reveal much more about the architecture.
Open vs closed manufacturing at a glance
More open manufacturing architecture | More closed manufacturing architecture | |
Equipment | Designed to accommodate equipment from different suppliers | Greater dependence on equipment supported within a defined ecosystem |
Software | Interfaces allow different systems to be connected | Components may be designed primarily to work together within one technology stack |
Data | Greater emphasis on standardised or documented exchange | Greater reliance may be placed on proprietary formats or interfaces |
Integration | Manufacturer or integrator may carry more responsibility for connecting components | A single supplier may handle more of the integration |
Technology choice | Greater scope to introduce alternative technologies | Choice may be constrained by compatibility with the existing ecosystem |
Changing components | Architecture aims to limit unnecessary dependencies between components | Changing one component may affect other parts of the system |
Control | Manufacturer can potentially retain more architectural choice | More architectural decisions may sit with the ecosystem provider |
These are characteristics rather than guarantees. An architecture described as open can still contain proprietary components, while a closed system may still support standards and third-party integrations.
Technology choice is only useful if the system can accommodate it
Being able to buy machines from different suppliers isn't particularly valuable if none of them can communicate with the rest of the production environment.
Imagine a manufacturer needs to replace a machining centre.
In a more closed architecture, the easiest option may be another machine supported by the existing technology stack. Choosing something different could require new software, interfaces or changes elsewhere in the workflow.
A more open architecture aims to reduce those dependencies. That doesn't mean a replacement machine simply plugs in and starts producing parts. Its capabilities, interfaces, process requirements and data still need to be understood and integrated.
The difference is that the architecture has been designed to accommodate that integration, rather than assuming equipment will always come from one predetermined source.
Research into standards-based flexible manufacturing demonstrates that this isn't merely theoretical. NIST-supported work has developed manufacturing cells using open standards and, separately, brand-agnostic interoperability between equipment.
Interoperability matters beyond the machines
Manufacturing interoperability extends well beyond getting two pieces of equipment to communicate.
A production workflow can involve product definitions, build instructions, schedules, machine data, quality results, inspection records and traceability information. These may need to move between engineering software, production systems, machines and quality tools.
If information can only be interpreted inside the system that created it, changing technology becomes harder.
Open standards can help reduce some of these barriers. NIST has long identified common information standards as important when manufacturers and their partners need to exchange information across different software environments.
But using a standard doesn't automatically solve interoperability either. Different implementations, data models and process requirements still have to be reconciled.
Open does not mean integration-free.
Closed systems can have an integration advantage
This is an important part of the comparison that often gets lost.
A supplier that controls more of a technology stack can design its components specifically to work together. Interfaces can be tested against a narrower range of known configurations, and the customer may have fewer integration decisions to make.
For some manufacturers, that's valuable.
If the available ecosystem already does exactly what the operation requires, accepting tighter technology constraints may be a reasonable trade-off for simpler deployment and a clearer line of responsibility.
An open architecture shifts some of that equation.
Supporting technologies from multiple sources creates choice, but it can also create integration work. Someone needs to understand the interfaces, manage compatibility and determine what happens when one component changes.
Openness therefore isn't the absence of integration. It changes who has the ability and responsibility to integrate.
What happens when the technology changes?
Production environments change over time. Manufacturers may add machines, replace software, introduce new inspection equipment, change suppliers or automate processes that were previously manual.
During the life of a production environment, manufacturers may change software, add machines, introduce new inspection equipment, replace suppliers or automate processes that were previously manual.
This is where architectural dependencies become visible.
Suppose a manufacturer wants to replace its production-management software while keeping its existing equipment. The practical question isn't whether the old system was labelled open or closed. It's whether the information and interfaces required by the surrounding production environment can be transferred, recreated or connected to something else.
The same question applies in reverse when replacing a machine while retaining the software around it.
Designing around documented interfaces and interoperable information models can make those transitions more feasible, although they still require engineering work. NIST's research into manufacturing interoperability and machine-readable standards reflects the long-standing need to exchange manufacturing information between heterogeneous systems.
Does open manufacturing prevent vendor lock-in?
No.
An open architecture may reduce some forms of technical dependency, but it can't guarantee that a manufacturer will never become dependent on a supplier.
Lock-in can arise from many places: specialised equipment, proprietary process knowledge, commercial contracts, qualification requirements, workforce expertise, data structures or the cost of changing an established production process.
A system could use open communication standards and still have critical dependencies elsewhere.
That's why manufacturers should look beyond whether a supplier claims to be 'open' and ask what can actually be changed, exported, substituted or integrated.
When might a more closed architecture make sense?
There are legitimate reasons to choose a tightly integrated ecosystem.
A manufacturer may value having one supplier responsible for a large part of the system. The available technology might already meet a stable and well-understood production requirement. Integration with technologies outside the ecosystem may simply not be important.
The decision becomes more difficult when requirements are uncertain or expected to change.
If a production capability is intended to operate for many years, incorporate new processes or work across different facilities and suppliers, the cost of future architectural constraints deserves more attention.
The relevant question isn't:
"Is closed manufacturing bad?"
It's:
"Are we comfortable with the dependencies we're creating?"
When might a more open architecture make sense?
A more open approach becomes particularly relevant when manufacturers expect the production environment to evolve.
That might mean introducing equipment from different suppliers, connecting existing and new machinery, changing software independently of hardware, or exchanging manufacturing information across different systems and organisations.
Open architectures can also be relevant where a manufacturer wants greater control over how its production capability develops.
But the trade-off remains. Greater choice can mean greater responsibility for architecture, integration and governance.
The objective shouldn't be maximum openness for its own sake. It should be enough openness to preserve the choices that matter to the manufacturer.
Five questions that reveal how open a manufacturing system really is
Rather than relying on labels, manufacturers can test the practical consequences of an architecture.
Can we introduce equipment from another manufacturer without replacing the surrounding system?
Can we retrieve our manufacturing data in a documented and usable form?
Are the interfaces we depend on documented, standardised or accessible to us?
Can we replace a software or hardware component without reconstructing the entire workflow?
If our requirements change in five years, who controls our ability to adapt the system?
The answers won't produce a formal openness score.
They will expose where important dependencies sit.
How this relates to Open Modular Manufacturing
For Authentise Modular Systems, openness is broader than simply connecting different brands of machines.
Our approach to Open Modular Manufacturing asks whether manufacturers can build production capability that remains adaptable as equipment, software, suppliers and requirements change.
Machine agnosticism contributes to that. So do interoperability, modularity and the ability to move useful manufacturing information between systems.
But openness doesn't require every component to be open-source or vendor-neutral. Proprietary technology can provide valuable capability within an open architecture.
The important distinction is whether choosing that component unnecessarily dictates the rest of the manufacturing environment.
That is also why open, modular and machine-agnostic describe different things. Openness concerns the ability to integrate and change. Modularity concerns how capabilities can be combined or replaced. Machine agnosticism concerns whether the wider architecture is inherently restricted to equipment from a particular machine vendor.
Together, they form part of the approach Authentise Modular Systems is developing around adaptable production capability that gives manufacturers greater choice over how their systems evolve.
Open or closed? Look at the dependencies
Open and closed manufacturing aren't two neatly defined types of factory.
They're useful ways of thinking about the choices embedded in a manufacturing architecture.
A tightly integrated ecosystem can reduce some integration work and provide a clear technology path. A more open architecture can preserve more freedom to combine and change technologies, but that flexibility still needs to be engineered and managed.
For manufacturers, the useful question is therefore not whether a system carries an 'open' label.
It's what happens when you need to change it.
Related concepts
Modular microfactory — a compact manufacturing environment built around production capabilities that can be combined or reconfigured.
Machine-agnostic manufacturing — an approach in which the wider manufacturing architecture isn't inherently restricted to equipment from a single machine vendor.
Manufacturing network — a group of manufacturing resources, facilities or organisations that contribute to production across a wider system.
Manufacturing resilience — the ability of manufacturing capability to continue operating, adapt or recover when conditions change or disruption occurs.
Open manufacturing — in the Authentise Modular Systems context, an approach that prioritises interoperability, technology choice and control of manufacturing capability.
See how Authentise Modular Systems is approaching open, modular and machine-agnostic manufacturing capability.
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