The International Association for Six Sigma Certification (IASSC) is a professional association in charge of developing and improving standards within the Lean Six Sigma community. IASSC is an independent third party certification body.
Lean Six Sigma is a combination of the lean management method and the six sigma method. The goal is to accumulate the benefits of both methods for optimal process improvement.
ITTA's Yellow Belt, Green Belt and Black Belt certification courses in Lean Six Sigma are the most comprehensive courses on these methodologies, in line with IASSC standards.