SoundBanks keep all of your audio files and information about how they are played back bundled together in files that can be easily loaded and unloaded with the demands of the game. Regardless of the systems employed on the game side for managing available memory and resources, Wwise SoundBanks can be generated to support most implementations.
A SoundBank can contain any number of events, Wwise objects, and/or converted media files. At particular points in the game, one or more of these project elements will be loaded into a game's platform memory in anticipation of specific sounds or motion objects being triggered.
SoundBank creation is better handled through the SoundBank Layout (F7) that gives you access to the SoundBank Manager and SoundBank Editor.