What is lean production?

the Main objective in Lean system is to eliminate the wastes in production. there are 7 wastes in production:

1. Transpiration.
2. inventory.
3. Moving.
4. waiting
5. over production.
6. Over processing
7. defectives

knowledge can be considered as 8th waste

Lean production began as a manufacturing technique to enhance efficiency and profitability.
Its primary focus is speed of output by waste elimination.
Waste is anything that does not add value to the end product.
Many industries aside from manufacturing are now adopting lean principles.