Calling neighboring factories an industrial cluster before a supply link or a shared service is on record gives the wrong account of what that place can do. The test is whether the manufacturers and the institutions around them are connected. This page follows the 2020 UNIDO technical paper on how those manufacturing connections develop, and it keeps a blank worksheet for the records behind the claim.
Industrial clusters are geographical concentrations of inter-connected enterprises and associated institutions that face common challenges and opportunities. That is the definition in UNIDO’s 2020 technical paper, The UNIDO Approach to Cluster Development, pages 18-19. The enterprises sit near one another, and they are connected to suppliers, buyers, and the schools, associations, and public bodies that serve the same activity. A row of factories on one estate shows where the buildings are. On those pages UNIDO states that geographical agglomeration is, in itself, no guarantee of strong economic performance. There is no universally accepted exact boundary, and the passage prints no firm-count cutoff. Copy the worksheet below and leave a cell blank when the confirming record is missing.
How manufacturing clusters develop
Manufacturing connections develop when firms that already share a territory take joint actions with one another and with the institutions that serve them, and when some arrangement coordinates those actions. UNIDO’s approach works with clusters that already exist. On pages 28-29 the paper describes the creation of a cluster from scratch as likely to become a top-down process, with limited incentive for private firms to lead.
Related firms create a reason for joint work. A manufacturer needs inputs and services. Other local firms can specialize in a component or a process. UNIDO’s examples of joint actions, on pages 26-27, are joint bulk purchase of inputs, joint advertising, collaborative research and development or innovation projects, and shared use of equipment. Between firms and institutions, the examples are technical assistance from a business association and public investment in infrastructure. UNIDO names the advantage from these collective efforts collective efficiency. The intervention diagram places joint actions and external economies on the routes into that advantage. It prints no weights. This page adds none.
A carton of machined brackets shows a component. It shows a cluster link only after the buyer and the seller are named.
Schools, associations, and public bodies belong in the picture when firms use them. On pages 18-19, UNIDO lists the support institutions that sit with the enterprises: business associations; business development service providers; financial service providers, including banks; public authorities, including local, regional, and national governments and regulatory agencies; and training agencies such as vocational schools and universities. On pages 28-29, the approach includes technical help so that vocational schools and other service providers make their services responsive to demand from inside the cluster. A college inside the territory is an institution on the map. A record that employers use its training is the connection.
Trust and a coordinating body decide whether joint work continues. On pages 26-27, UNIDO treats the willingness of entrepreneurs to take joint actions as a critical success factor, and it lists three obstacles to cooperation: transaction costs, coordination costs, and an adverse business culture. Obstacles also arise between enterprises and support institutions. Spatial proximity on its own can reduce some of the costs of cooperation between enterprises and institutions. Other obstacles still have to be addressed before the cluster is dynamic. On pages 28-29, a governance mechanism is any formal or informal organization or arrangement that leads and manages joint actions aimed at the cluster’s competitiveness. The paper describes a cycle it tries to set in motion: coordinated joint actions, then stronger performance, then a larger stock of trust and shared values, then stronger governance. That cycle is the paper’s account of its own approach. It is not a measured result for a district you have not studied.
UNIDO numbers six phases for a cluster initiative (pages 30-31). They are the sequence of a support effort. They are not stages a manufacturing district must pass before the definition applies.
- Cluster selection. UNIDO recommends criteria. National and regional actors, together with the donors, make the selection.
- Governance, trust, and the cluster development agent. A facilitator, the cluster development agent, is appointed. After the diagnostic, that agent works with the stakeholders on the move from an underdeveloped cluster toward a performing one, and toward a governance structure they operate.
- Diagnostic. A participatory study describes the socioeconomic and institutional setting, looks for points where an intervention can act, sets a baseline for later monitoring, and starts to build trust. The stakeholders are the principal informants.
- Vision building and action planning. Stakeholders turn the diagnostic into a shared vision and a strategy. Both are revised as conditions change. The paper says these are feedback loops, not a single meeting.
- Implementation. The facilitator helps carry out the action plan and builds the capacity of organizations that already exist. The paper says the facilitator does not provide the services directly and does not disburse resources to the stakeholders.
- Monitoring and evaluation. A result chain links inputs and activities to outputs, outcomes, and the development objective. Indicators and reporting duties are defined for that initiative. Trust-building runs from the diagnostic through this phase.
A new site, a training agreement, or a new association creates an opening for a connection. The connection is the later record of use. The diagnostic’s baseline figures are whatever that study measured. This page does not copy them.
Co-location and economic connections: what is the difference?
Co-location is a shared place. An economic connection is a transaction, a joint action, or a service the firms use. An industrial estate can hold a cluster. The tenant map establishes the estate. UNIDO states, on pages 18-19, that there is no universally accepted exact boundary. A distance treated as close in one location can be insurmountable in another. Transport facilities, cultural identity, and social values influence that distance. The paper also refers to a critical mass of enterprises and says the number required can vary with the size of the country. It prints no single firm-count cutoff in that passage, so the cutoff stays blank here. Define the activity and the area you are examining, and write down why those firms belong in one review. The paper does not print a municipal line or a mileage rule as a universal boundary.
The failure mode of a cluster claim is a map that stands in for a transaction.
| Observation | What the record shows | Where this reading fails | Record that would change it |
|---|---|---|---|
| Several factories share one estate | The plants are near one another | Neighbors are treated as trading partners | An order or a delivery that names the input, the buyer, and the seller |
| A directory lists component makers and assemblers | Potentially related capabilities are listed | A listing is treated as a current supply relationship | Confirmation of who supplies whom, and for which work |
| A vocational school or university offers a relevant course | Training is available in the area | A course catalogue is treated as employer use | Participation, hiring, or another record that firms use the course |
| Firms belong to one association or commission | They share an organizational affiliation | Membership is treated as joint work | The joint action, who took part, and who coordinated it |
| Plants use one road, terminal, or other facility | They have access to the same infrastructure | A shared route is treated as a production link | A service arrangement that names the facility and the firms |
Keep a photograph, a directory entry, and a confirmed commercial relationship as separate evidence. Each one answers a different question.
Different cluster types have different connections
The links you should look for depend on how the cluster sits in a value chain, and on whether those links are organized. UNIDO draws that distinction on pages 20-23. It does so with linkage patterns and with local versus global buyers. This page uses those patterns.
A local value chain keeps buyers and suppliers inside the territory. UNIDO’s examples are a handicraft cluster and a cluster making a typical food product, which the paper calls a terroir product. The diagram of local and global buyers, on pages 20-21 and credited there to Kaplinsky and Readman (2000), places small-scale manufacturers and large or multi-plant manufacturers inside the local cluster, and it places local customers on the cluster side of the national boundary. The records to seek are local sales, local inputs, and local services.
A global value chain runs to a lead buyer outside the territory. UNIDO’s examples are automotive and apparel. Lead buyers set quality criteria and standards that suppliers have to meet. The paper says the investment required for compliance is typically left with the suppliers, who often face resource constraints. The same diagram places buyers, including specialized buyers and transnational corporations, export agents, large retailers, and the global customer beyond the national boundary. Ask which links stay inside the area, and which run to a parent firm, an export agent, or a distant buyer. Limited local purchasing describes that shape. The plants can still be busy on contracts with distant buyers.
An under-performing cluster and a performing cluster differ in their linkages. The diagrams on pages 22-23 show an under-performing cluster as many firms and local support institutions without clear linkages among them. The performing diagram shows organized linkages among many actors: backward and forward linkages, raw-material and equipment suppliers, an export consortium, public and private support institutions, and a public-private partnership, with global buyers and final markets beyond the cluster. Those labels are the contents of the diagram. A place can be performing, in this sense, with a different mix of links. The test is whether the links are documented, and which actors they join.
UNIDO also sets innovation clusters apart as places for practice-oriented research and for smaller firms moving toward digital production. The box states that role. The sentences used here print no firm count and no employment total, so those cells stay blank.
On pages 18-19 the paper names four clusters as internationally renowned examples: the Sassuolo ceramic cluster in Italy, the information technology cluster of Bangalore in India, the automotive cluster of Tangier in Morocco, and the Australian and Chilean wine clusters. It presents them as places where enterprises developed a competitive position and where local economic activity grew with that position. The names are examples in a 2020 paper. This page attaches no employment count, firm count, wage, or export total to any of them, and it offers no current ranking. A current reading of Sassuolo, Bangalore, Tangier, or either wine region needs records dated for that reading.
For a firm that exports, the route beyond the estate is its own question. Ship time in port, container dwell, and liner connectivity are three different clocks, and a shared export road does not set any of them. That explainer sits with this one in the World section.
Copyable worksheet: find the links behind the claim
Pick one activity, such as machined metal parts for equipment makers in a defined area, and write the review date at the top of the copy. The sheet is an editorial aid for collecting records. UNIDO’s own diagnostic also asks about gender, poverty, and environmental results. Those questions need the records that diagnostic calls for, and this sheet leaves them off.
Leave the last two columns blank until you have the document. An empty cell means the record is missing. It does not mean the link was disproved.
| Connection | Observation to investigate | Record or confirmation to seek | Evidence and date | Next request and owner |
|---|---|---|---|---|
| Suppliers | A local firm supplies a related producer, or several firms buy one input together | An order, a delivery note, or a confirmation from the parties that names the input and the relationship | ||
| Skills | Related employers use a shared training provider or a shared occupation | Employer participation, placement, or another record of training use, with personal information kept out of the sheet | ||
| Institutions | Firms use a school, association, laboratory, business-development service, or public body | A completed service record, project participation, or a confirmation of actual use | ||
| Infrastructure | Firms use a common facility or coordinate access to it | The facility, the firms, and the arrangement or use record | ||
| Governance | A body initiates or manages a joint action | The body’s name, the action, and who took part |
For each filled cell, write who supplied the information, which period it covers, and what it establishes. A firm can confirm a local component purchase and withhold the share of its spending. That confirmation supports the existence of a link. The local-sourcing share stays blank.
Training needs the same split. A course on offer, an employer who takes part, and a later job outcome are three observations. How to record signup, completion, and an observed work task separately is the sheet for a training program. Use it when the cluster claim rests on a course.
After a supplier link is on the sheet, the next purchasing question is whether those suppliers depend on one upstream plant or one route. The supply-chain concentration worksheet is that check. It is a different page because a local purchase and a single upstream node can both be true.
How to interpret an incomplete worksheet
Write the conclusion at the level of the records you hold. Keep three labels available: a link you observed in a document, a link a participant reported, and a link that is still unknown. A blank cell stays unknown. It is not a finding that the link is absent.
Here is a hypothetical file constructed for this page. A district directory lists machining firms, one assembler, and a technical college. The assembler confirms that it bought one component from a local firm and does not state what share of its purchases that component represents. The college provides a course list with a machining course and no employer names. The statement the file supports is narrow. One participant reports one local component purchase, and a relevant course is on offer. Joint purchasing, a governance body, employer use of the course, shared hiring, and any result for productivity or jobs stay off the sheet.
The next record should close one blank cell. Ask the supplier to confirm the component and the relationship, or ask the college which employers use the course. Stop there. Adding a directory line, a reported purchase, and a course title into one maturity score mixes unlike observations.
Connections do not prove economic success
On pages 18-19, UNIDO states that geographical agglomeration is, in itself, no guarantee of strong economic performance, and that the advantages associated with clustering do not always emerge automatically. The same pages say that relatively few clusters in the developing world have achieved high and sustained growth. On pages 26-27, the paper states that the existence of a cluster does not, by itself, ensure that entrepreneurship will flourish or that enterprises will generate sustained returns. In clusters the paper calls non-performing, the constraints show up as competition that lowers wages, disregards the welfare of workers, holds down investment in technology, and depletes natural resources. That is a pattern the paper describes. It is not a wage, an investment total, or an environmental result for a place named on this page.
Documented links and a causal claim are different tasks. A causal claim needs an outcome, a period, and a comparison. UNIDO’s monitoring phase builds that comparison from a result chain and from indicators defined for the initiative. This worksheet does not contain those indicators. Later chapters of the same paper narrate specific projects and print employment and export figures for those projects. Those figures stay with those projects. They are not entered here.
Connections also carry dependencies. Several nearby suppliers can still depend on one lead buyer, one upstream plant, or one route. The concentration worksheet linked above is the place to test that. For a reader looking at a region, the useful output of this page is a dated list of documented connections and of questions still open. No growth multiplier is attached.
Rule of thumb: If the only filled cell is a shared address, keep the supplier, skills, institution, infrastructure, and governance cells blank and describe the place as co-located production.
Method and sources
The source for this page is UNIDO’s 2020 technical paper, The UNIDO Approach to Cluster Development: Key Principles and Project Experiences, prepared by the Department of Digitalization, Technology and Innovation. The PDF was fetched once on 18 October 2026 from UNIDO’s site. Page references above follow the page numbers printed in that PDF. Library searches for industrial-cluster documents, including searches limited to unido.org, oecd.org, and worldbank.org, returned no usable cluster paper. A cached search-result list for the phrase “industrial cluster” was empty, and no new search-result data was purchased.
The comparison table and the worksheet turn the paper’s definition, linkage diagrams, and diagnostic questions into requests for records. No fieldwork, transaction audit, or causal evaluation was done for this page. No current cluster ranking is stated. The photographs show a workshop estate, a component bench, a freight road, and a metalworking classroom. They do not document Sassuolo, Bangalore, Tangier, or the wine clusters named in the paper.
Further explainers are in the World section. Corrections and source practice are in the editorial policy.
