1 available when a customer wants or asks for something: --
They will sell a voice recognition product as an add-on, on-demand service for their users.
In the library's warehouse, robots would manage stock and fetch books on an on-demand basis.
The on-demand economy works by taking a service, such as meal delivery or taxis, and using technology to connect suppliers with consumers.
HBO says that its on-demand business is not dominated by its hit shows but by the niche interests of its audience.
Most people in this region do not even have television, let alone on-demand movies.
2 a service for watching films or TV programmes at any time: --
We can complete it step by step however long the road is and it can't be completed however short the road is if you don't even mark your footprint.
Vi kan slutföra det steg för steg hur lång vägen än är och den kan inte slutföras hur kort vägen än är om du inte ens markerar ditt fotavtryck.