Abstract: Devices, systems, and methods are described for authoring, producing, securing, and/or distributing multiple variations of an instance of a media presentation. For example, one device embodiment includes a processor and memory having instructions executable on the processor. The instructions can allow a producer of media content to define a number of variating dimensions for a media presentation, maintain subscriber variation database tables having records that define subscriber variations in terms of a set of variating dimensions from the number of variating dimensions, maintain media element database tables having records that define media elements in terms of a set of variating dimensions from the number of variating dimensions, and determine which elements and in what order the elements are to be included a variation of an instance of a media presentation.