The ISO 18404:2015 Lead Auditor Certification is a commonly accepted qualification for professionals specializing in auditing the compliance of companies to the ISO 18404:2015 standard, which defines competence in Lean and Six Sigma methodologies. With this qualification, auditors are assured to be equipped with the capability to assess and validate an organization\'s ability to effectively implement and sustain Lean and Six Sigma regulations. Building skills of audit planning, conduct, and reporting in line with ISO 18404:2015 lead auditor requirements is the primary objective of the certification. Both at individual and organizational levels, Certified Lead Auditors gain knowledge in reviewing whether organizations meet the competency standards for Lean practitioners, Six Sigma practitioners, and Lean & Six Sigma professionals. An understanding of the audit process in alignment with ISO 19011:2018 (Guidelines for Auditing Management Systems) forms part of the key elements. First (internal), second (supplier), and third (certification) party audits are covered under this. Training has been provided to the professionals in areas of gap analysis, process effectiveness assessment, and recommendation generation to facilitate continuous growth. Professionals can serve as Lead Auditors, Quality Managers, or Compliance Officers in industries where Lean and Six Sigma methodologies encourage operational excellence and process improvement by obtaining this certification. Certified auditors are beneficial to organizations since they can encourage efficiency, ensure compliance, and facilitate efforts for continuous improvement. Professionals engaged in operational excellence, process optimization, and quality management are required to possess the ISO 18404:2015 Lead Auditor Certificate. It showcases expertise in evaluating Lean and Six Sigma skill sets, aiding companies in their efficiency and performance goals.