maturity model

A maturity model is a structured framework that describes progressive levels of capability or performance in a specific domain, such as quality management, manufacturing operations, cybersecurity, or data governance. It is used to assess the current state of an organization or system and to provide a reference for systematic improvement over time.

Core characteristics

In industrial and regulated manufacturing environments, a maturity model typically:

• Defines a small number of ordered levels (for example: initial, managed, defined, quantitatively managed, optimizing)
• Describes the expected practices, behaviors, and controls at each level
• Provides a way to evaluate the current level of a plant, process, or system
• Helps organizations plan improvements without prescribing a specific tool or vendor

Maturity models do not by themselves create compliance or certification. They are descriptive reference frameworks, not audit standards.

Use in manufacturing and quality systems

Within manufacturing and OT/IT environments, maturity models commonly refer to:

• Quality and QMS maturity: Assessing how consistently and proactively quality management processes are defined, measured, and improved. For example, some organizations use ISO 9004 as guidance for evaluating and improving the maturity of an ISO 9001-based system.
• Operational excellence maturity: Evaluating lean practices, standard work, problem-solving discipline, and continuous improvement routines on the shop floor.
• Digital / MES maturity: Gauging the progression from paper-based processes to integrated MES/ERP/PLM, including levels of traceability, data integrity, and real-time visibility.
• Cybersecurity and data protection maturity: Applying models that align with frameworks such as NIST or CMMC to understand how formalized, monitored, and continuously improved security controls are in OT and IT environments.

Operationally, organizations may run a maturity assessment workshop, rate themselves against criteria at each level, and then map specific improvement initiatives (for example: introducing electronic travelers, tightening document control, or formalizing CAPA analysis) to move toward a higher maturity level.

Common elements of maturity levels

Although specific models differ, many share similar characteristics across levels, such as:

• Lower levels: Ad hoc, reactive, limited documentation, inconsistent execution, reliance on individuals rather than systems.
• Middle levels: Defined processes, documented procedures, basic metrics, partial digitalization, increasing standardization across sites or lines.
• Higher levels: Quantitative performance management, closed-loop feedback (for example from NCR/CAPA into design and process planning), integrated systems, and continuous improvement embedded in normal work.

Common confusion

• Maturity model vs. standard: A maturity model describes how advanced practices can become; a standard (such as ISO 9001) specifies requirements that must be met. A company may be certified to a standard but still be at different maturity levels in how it implements and improves those requirements.
• Maturity assessment vs. audit: A maturity assessment is usually an internal or collaborative diagnostic tool, often qualitative. An audit is a formal evaluation against defined requirements and may be tied to certification or customer approval.

Relation to ISO 9004 context

In quality management, ISO 9004 is often used as a reference for understanding and improving the maturity of an existing ISO 9001-based system. Organizations interpret the guidance in ISO 9004 as describing more advanced, long-term effective and efficient practices, and may map those practices to internal maturity levels for strategy, risk management, and process performance. This use does not replace ISO 9001 requirements and does not by itself determine audit outcomes.