Multimodal domestic transportation management systems (TMSs) are a subset of the global TMS market. They generically refer to the category of software that deals with the planning and execution of the physical movement of goods across the supply chain. This market focuses on holistic multimodal domestic TMSs for use by shippers (such as manufacturers, retailers, distributors and wholesalers) or non-asset-based, third-party logistics (3PL) organizations. The primary emphasis is on systems that support for-hire transportation management operations. This is where users employ a variety of shipping modes, including over the road, private/dedicated fleet, small package, rail and intermodal. Global companies and companies that import products from different regions also use air and ocean as a main transport mode, which also can be covered by some, but not all, of the multimodal domestic TMS vendors.