1. Push type: Release of work is based upon the demand forecast. This type is less responsive to demand fluctuations as it is based on long term forecasts.
2. Pull type: Release of work is based on system status. This type is more responsive as production is done based on the actual demand. Example: items kept in a shelf in the supermarket.
3. Hybrid type: It is a combination of both push and pull type. For example in case of Dell they forecast the component parts demand and release order for production (push type) but assembly of final product is done only when there is an order for it (pull type).
Of all the three systems Hybrid type will have least customer lead time assuming all three work in the same production system.
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