Lean Six Sigma and ISO 9001- Comparison and Optimization of Synergies

Maria Achilleoudes, Independent Management Consultant and Trainer, Opti Link Management Consultancy, Nicosia, Cyprus

Keywords: Lean Six Sigma, ISO 9001, Synergies, Optimization

Industry: Financial Services, Healthcare, Service

Level: Advanced


Lean Six Sigma (LSS) and ISO 9001 Quality Management Standard as operational improvement methodologies present several differences as well as similarities. They also reinforce and complement each other.

Lean focuses on minimizing the resources utilized for carrying out work, which improves efficiency.

Six Sigma focuses on offering products and services that satisfy the organization’s customers (and stakeholders) with consistency.

ISO 9001 Quality Management Standard focuses on improving customer satisfaction, as well as meeting the organization’s stakeholders’ requirements.

Organizations that have committed to the implementation of these methodologies have realized improvement in customer satisfaction (retaining their current and gaining additional customers) and have realized important operational cost reduction, both leading to greater profitability.

Each methodology has its improvement approach and each presents some advantages over the other one. At the same time, they complement each other.

This proposal includes a) the main principles of each methodology b) a comparison of the two methodologies presenting their similarities, differences and advantages over each other and c) how an organization can maximize its benefits in operational improvement by optimizing the synergies between these methodologies.