Can you SUMMARIZE everything below into 1 Big Summary:

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* Operational Improvement*

The lean methodology relates much to the concept of continuous improvement. It campaigns to constantly improve every process that generates more value while eliminating the ones that waste time. For instance, in the old structure of Walmart Organization, they embraced the structure of one manager being in control of very micro activities, even the execution of small tasks. This was not generating much productivity since there was no segmentation and specialization, and thus to mitigate this, they have to shift and embrace a shared management leadership model .

This is vital since there will be continuous improvements when every team member takes an ownership role. This can be achieved when the management trusts the team's expertise and gives them more independence based on their performance.