Early supplier involvement $($ESI$)$ highly effective supply chain techniques where key suppliers become more involved in the internal operations of their customer, which may include: Managing inventories at their customers$$ points of use and Participating in their customers$$ new product & process design processes. There are $3$ concepts covered on early supplier involvement:

$1)$ Vendor Managed Inventory

$2)$ Co$-$managed inventories

$3)$ Supplier co$-$location

Briefly describe below the $3$ concepts above and for an extra bonus point provide the example$$ discussed in class for supplier co$-$location and describe.