As a result of all the unpredictable market shifts and the fluctuating demand and supply, many businesses, especially retail businesses and original equipment manufacturers (OEM) have sought new ways to optimize their operations, increase production efficiency, lower costs, and eliminate material waste. Outsourcing order fulfillment services through a 3PL is one of the most popular and efficient solutions. Companies can focus more on their business operations and sales growth by employing a 3PL provider to prepare and ship products to customers. Most retailers and OEMs outsource kitting and/or assembly. They are two distinct services that, in most cases, work together in the order fulfillment process.