UpCOMING Public Business Courses DISS offers a wide variety of public courses aimed to support business and organisational requirements. Certification 6Sigma Study VMEdu Certificate American Purchasing Society (APS) Certificate Axelos Certificate Chartered Management Institute (CMI) Certificate CQI | IRQA Certificate DISS HABC IACET Institute of Leadership and Management (ILM) Certificate NGstudy VMEdu Certificate SCRUMstudy VMEdu Certificate SMstudy VMEdu Certificate The KPI Institute Certification