TS ISO/IEC 15504-1

TS ISO/IEC 15504-1 provides the conceptual foundation for how software and, more broadly, information technology processes are assessed. Its focus is on clarifying the relationship between process assessment used for process improvement and process assessment used for process capability determination. Rather than setting out a step-by-step assessment method, this part establishes the common concepts and vocabulary that underpin the series.

Process assessment, improvement and capability

In general technical terms, process assessment examines how well an organisation’s processes are defined, implemented, managed and measured. Process improvement uses the findings from that assessment to make processes more consistent, efficient and repeatable. Process capability determination, by contrast, is concerned with understanding how well a process can achieve intended outcomes; this is important in supplier evaluation, quality assurance and organisational governance.

Why a shared vocabulary matters

Because the standard is centred on concepts and definitions, it helps different stakeholders use key terms in a consistent way. Aligning words such as process, capability, assessment and improvement within one framework improves the comparability of assessment results and reduces ambiguity. The scope of this part is limited to providing overall information on process assessment and its use in the two stated contexts, so it should be understood as a foundational reference rather than a full procedural standard.

• Provides a conceptual basis for software and IT process assessment.
• Addresses both process improvement and process capability determination contexts.
• Functions as a shared terminology reference for assessment practice.
• Explains the high-level framework rather than detailed assessment procedure.