You can refer to a baseline set of use cases a cloud solution architect can use to identify the best solution target for the enterprise at https://www.scribd.com/document/17929394/Cloud-Computing-Use-Cases-Whitepaper(Saved copy).
These are illustrative examples of the most typical cloud use cases and are not meant to be an exhaustive list. Active use case components are shown in color.
Additional details on the operational requirements summarized here are provided in Chapter 11, Operational Requirements.