Container housing units are related to the site and land occupied during a certain amount of time by the need of water supply and excavation, electricity, telecommunications, etc.
Plug-in city is a concept that is developing as more units capable of moving by intermodal means are brought up to the market.
An example of CLU housing is at the Operation Enduring Freedom - Horn of Africa base (Camp Lemonnier) in Djibouti.
In some military applications, the slang terms "Combat Housing Unit" or "cans" has also gained acceptance.
The advantage is the insulation in the walls, ceiling, and floor compared to corrugated metal in standard shipping containers that can get very hot or cold from the weather outside.