A Use Case is defined as a potential usage of a product or
service for a particular customer. It is or generally should be the first step
in assessing who your customers can be.
To define a Use Case, the following 3 ‘U’s need to be
defined:
Usage: This is
the first U and states the solution offered by the product or service. For
example, a use case for a crowd-funding platform can be ‘helping companies with
thin credit files raise money’.
User: This is the
second U and refers to the potential user of the product/service. In the
example above, a ‘startup’ can be the user.
Utility: This is the final U and measures the utility
of the solution offered to the user. A case which does not offer adequate
utility to a user constitutes a weak use case and should be disregarded. In the
above example, the utility of crowd-funding platforms is high for startups as
the latter find it very difficult to raise money from traditional investors and
in different geographies.
Use case scenarios are best described in UML (unified modeling language). You can find some good use case examples in the diagram community of Creately.
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