MTS-Make To Stock Planning: standard product made to a forecast before any committed orders come in
MTO -Make To Order Production : standard products not held in inventory and made after a committed order comes in
ATO- Assemble To Order or Finish To Order with placement of the Inventory/Order interface: standard product where some components are held in stock and the finished product is finished after the order comes in
CTO- Configure To Order: The standard product has variations; as many as not to justify the creation of a part number for every variation but not as many as to make the underlying structure too complex to handle
ETO- Engineer To Order: complex structures and customer specified projects which were never built before and make it impossible to be handled with standard variations
