EN ISO 9001:2008 - Quality  Management Systems. Requirements.

This is a popular process-oriented quality model in business life. It is also an international standard, used in quality assurance and quality management. Applying it to software development is difficult, due to its generality and applicability to any kind of development and production processes. It does not contain software specific elements.

The standard is based on 8 quality management principles: customer focus, leadership, employee involvement, process approach, continuous improvement, fact-based decision making, mutually advantageous supplier relationships.

The standard emphasizes measurement and analysis. Besides error-corrections, taking preventive actions is also of a high priority.