Technology
My chosen technology are DVDs'
DVD's are marketed by advertisements using TV channels, and also posters in public places and in shops that retail the product.
DVD's are produced by the same company but are sold to publishing companies who transform them for the specific film. They can vary in cost from £5 to £20 on an average DVD.
It is a hot media. It is a pull technology as it encourages the customers to buy it.
It is a reasonable new media but it is also going under transformation from new technologies such as HD and Blueray http://en.wikipedia.org/wiki/Blueray.
The people that are responsable for developing it are th companies that are making them, because someone else could invent a new better product and they would be screwed.
http://en.wikipedia.org/wiki/Dvd