Recently I “rediscovered” the PDCA cycle, made famous by W. Edward Deming, consisting of Plan, Do, Check and Act phases, and forming the base for every process improvement cycle. According to Wikipedia (

PDCA (plan–do–check–act) is an iterative four-step problem-solving process typically used in business process improvement. It is also known as the Deming circle, Shewhart cycle, Deming cycle, Deming wheel, control circle or cycle, or plan–do–study–act (PDSA).

PLAN – Establish the objectives and processes necessary to deliver results in accordance with the expected output. By making the expected output the focus, it differs from other techniques in that the completeness and accuracy of the specification is also part of the improvement.