These illustrations were created for use by an in-house consulting business unit that specialises in lean process optimisation. Lean process specialists use the acronym DMAIC to describe the five steps of a process improvement project, i.e.: Define – Measure – Analyse – Improve – Control.
The final images replaced an old set of icons that were previously used by the lean process specialist to describe DMAIC. The new imagery has been described as "marvellous".