1. A non-transitory computer-readable medium for remotely executing operations of an application that is provided through a computing device, the non-transitory computer-readable medium carrying instructions, that when executed by one or more processors, cause performance of operations comprising: (a) accessing a schema that logically represents a nodal hierarchy relating to execution of an application on a processing device, the nodal hierarchy including multiple nodes, including one or more category nodes and one or more content nodes; (b) providing, with the schema, an executable script that is associated with at least one node of the hierarchy; (c) processing, using the schema, a user input from the computing device, the user input being selective of one or more nodes of the hierarchy, and providing user interface content to the computing device, the user interface content corresponding to one of (i) one or more nodes, or (ii) a script content, generated as an output of an executed script that is associated with a selected node; and (d) executing, using the schema, the application on the processing device.
3. The non-transitory computer-readable medium of claim 1 , wherein the executed script invokes an event handling functionality that specifies a type of input that can be recognized from a user in response to the user interface content being displayed on the computing device.