The ISO 18404:2015 Lead Auditor Development Program is a specialized and internationally recognized training program for professionals who want to become certified lead auditors for Lean and Six Sigma management systems. ISO 18404:2015 lead auditor establishes the competencies for individual practitioners and organizations in the use of Lean and/or Six Sigma methodologies. This development program offers a complete roadmap for individuals to not just learn these principles but also cultivate the skills of an auditor to review compliance against the ISO 18404 standard. ISO 18404:2015 lead auditor is different from all other ISO standards in that it focuses on organisational and human competences, as well as systems and procedures. It provides a framework to ensure that personnel ranging from Master Black Belts to Six Sigma Green Belts and Lean Practitioners possess the skills, attitudes, and know-how that are necessary in order to bring about long-term improvement. Responsibility as an ISO 18404 certification accredited auditor demands both technical auditing and evaluations focused on people. This program is perfect for quality professionals, process improvement managers, auditors, and consultants who seek to move up the career ladder within operational excellence. It is also extremely applicable for those with previous experience in Lean or Six Sigma who wish to move into auditing or certification. The ISO 18404 Lead Auditor Development Program is a strategic resource for organizations that want to develop internal audit capacity and ensure that their Lean and Six Sigma initiatives are aligned with international standards. Certified auditors have a vital role in ensuring continuous improvement systems, detecting non-conformities, and contributing to organizational excellence.