what is the difference between backorder and out of stock 
a backorder and out of stock are similar whereas out of stock is an indicator that good is not available a backorder often signifies that out of stock order may still be able to be ordered but is not available for immediate shipment a company may keep a product as out of stock if it does not wish to further sell more units of that product however a backordered product is more likely to return due to a temporary delay in product availability 