SIPOC is an acronym for Suppliers, Inputs, Process, Output, Customers. It is a method that helps improvement teams remember each stakeholder group when mapping and analyzing processes.

A SIPOC diagram is a tool used to identify attributes of a process before an improvement project can commence. It is frequently used in the early stages of the DMAIC process. as it helps establish causal relationships between steps. Once complete a SIPOC diagram should represent a high level map of the process.

At each step in the process the SIPOC terms can be used for example what inputs did the process have and who supplied them – what outputs did the process create and who consumed them. Specific requirements can also be captured if required. The following link shows an example SIPOC diagram

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