I created this course as a part of my preparation for the Six Sigma Black Belt certification, which I obtained in June 2021 from AISSC. I was able to leverage my experience working as a business analyst/consultant in the banking and technology industries for this course. Furthermore, I have utilised the knowledge previously obtained during my studies of statistics and social policy, which concentrated on customer-focused and data-driven approaches in research projects which form the core of Lean Six Sigma methodology.