We can use Pareto analysis,Nominal graph technique,solution and fault tree,evaluation matrix,cause effect diagram also.
Act: To get greatest Benefit:
In this phase we check if the objective is met. If the check part is ok . Then we say we are one step up but if not then , we need to start it again.
In terms of software development except Check phase ,Plan,Do and act comes under development phase.
Determine new target & start PDCA cycle again
To be continued…