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Continual assessment of process efficiency also requires a continuous
flow of appropriately processed key data, verified for plausibility,
on the condition and performance within the processes.
The development of this key data over time permits future development
to be forecast and acts as a control instrument.
The amount of key data produced is to be limited and assigned to
individual layers of the hierarchy.
Benchmarking has proved to be a reliable management instrument
for learning from the results and performance of leading companies.
A benchmarking study consists of four phases:
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