First, what it is not. It is not a secret society, a slogan or a cliche. Six Sigma is a highly disciplined process that helps us focus on developing and delivering near-perfect products and services.
The word is a statistical term that measures how far a given process deviates from perfection. The central idea behind Six Sigma is that if you can measure how many “defects” you have in a process, you can systematically figure out how to eliminate them and get as close to “zero defects” as possible.
Attributes most important to the customer
Failing to deliver what the customer wants
What your process can deliver
What the customer sees and feels
Ensuring consistent, predictable processes to improve what the customer sees and feels
Designing to meet customer needs and process capability