On Demand ( German "on demand ", " on-call" ) is a term for additional services, goods, or the like, which is to draw attention to the timely fulfillment of requirements or demands. The on-demand systems and processes must be designed to be flexible, as they are often subject to real-time demands. In order to supply the planned power they need full access to the necessary resources. They are therefore more powerful and more highly integrated under normal conditions than systems that provide a similar end product immediately.

On- demand systems in production, for example, in letterpress, mean that customers / buyers have a controlled penetration of the manufacturing system (in the example a corresponding printing system ). Accompanied by a reduction in the storage of the finished product, in the best case to zero. This is particularly advantageous if is possible to produce many different products or product variants from a very limited set of resources: the storage of finished products or different versions omitted.

The addition of " on-demand " is used all too frequently in part because it has positive connotations - something goes faster now, flexibly, etc. This was recognized by marketing experts who use the additive for systems or processes where it is not apparent something special there directly "on demand" happened or where on-demand behavior has always been self-evident. For example, a ticket machine provides the desired ticket " on-demand ", which is a matter of course. It must therefore be examined in each individual case whether a so-called " on-demand " system or process meets the requirements and the positive qualities associated with the term additive really has.

Types of on-demand services (excerpt)

  • Book-on -Demand
  • EBooks on Demand
  • Audio on Demand
  • Video -on-Demand
  • Software -on-demand
  • Just- in -time production
  • Distribution policy