In computing, a scenario (UK: /sɪˈnɑːrioʊ/, US: /səˈnɛərioʊ/; loaned from Italian scenario (pronounced [ʃeˈnaːrjo]), from Latin scena 'scene'[1]) is a narrative of foreseeable interactions of user roles (known in the Unified Modeling Language as 'actors') and the technical system, which usually includes computer hardware and software. A scenario has a goal, which is usually functional. A scenario