process approach

The process approach is a management principle that views an organization’s activities as a network of interconnected processes that must be defined, managed, and improved as a system. Instead of focusing only on departments or individual tasks, it focuses on how inputs are transformed into outputs, how those outputs flow to the next process, and how the entire chain achieves defined objectives.

Core idea

In a process approach, each process is:

• Clearly defined with inputs, activities, outputs, and owners
• Operated under controlled conditions using documented methods where needed
• Measured and monitored using relevant indicators
• Linked to upstream suppliers and downstream customers (internal or external)
• Improved based on data, feedback, and risk assessment

This approach is central to quality management standards such as ISO 9001 and IATF 16949, where the quality management system (QMS) is described and audited as a set of interacting processes.

Application in manufacturing and regulated operations

In industrial and regulated environments, the process approach commonly includes:

• Mapping core processes such as order intake, production planning, manufacturing, inspection, release, and post-delivery activities
• Defining supporting processes such as maintenance, calibration, document control, training, and change control
• Linking process definitions to OT/IT systems such as MES, ERP, LIMS, and QMS tools
• Using process-based metrics (for example, yield, on-time completion, nonconformity rate, rework rate, lead time)
• Managing risks and controls at the process level, especially where regulatory or customer requirements apply

Operationally, the process approach often shows up in process maps, SIPOC diagrams (Suppliers, Inputs, Process, Outputs, Customers), value stream maps, and procedure sets that align with specific processes rather than with departments only.

Relationship to quality standards

In standards such as ISO 9001 and IATF 16949, the process approach:

• Is one of the key quality management principles
• Frames how organizations identify, document, and control their QMS processes
• Supports evidence-based decision making by tying data and records to specific processes
• Helps connect requirements across functions, for example between design, purchasing, production, and inspection

Auditors commonly review how processes are defined, how interfaces between processes are controlled, and how process performance data is used for improvement.

What it is not

The process approach is not limited to:

• Single tasks, work instructions, or job roles without context
• Organizational charts or departmental boundaries alone
• Isolated projects that do not consider their impact on upstream and downstream processes

It also differs from treating quality as a separate function; instead, quality-related controls are built into each process.

Common confusion

• Process approach vs. procedural approach: A procedural approach emphasizes documenting and following procedures. The process approach includes procedures where appropriate but adds focus on process objectives, performance, interactions, and continual improvement.
• Process approach vs. project management: Projects are temporary and unique. Processes are ongoing and repeatable. The process approach focuses on these ongoing activities and their consistent performance.

Connection to the IATF 16949 context

Within IATF 16949, the process approach is applied to the entire automotive quality management system, including how customer requirements flow through planning, production, and support processes. Data from MES, ERP, and shop-floor systems is typically used to monitor process performance, manage risks, and demonstrate control and improvement across the process network.