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Greenfield is a technique in which participants use their imagination (without limits or constraints) to think about the product requirements.
Story-writing workshops (aka. user story workshops) is a preferred technique to collect user stories. The user story writing workshops are attended by qualified cross-functional stakeholders as well as subject matter experts. Participants make up as many user stories as they can by putting themselves in the shoes of the different types of users who interact with the system and the actions each takes to get their job done.
Job shadowing technique is the direct observation of how users use or interact with the system or the product and its environment. Job shadowing are helpful to compare the gathered requirements with what real users actually do in real life. This technique is often used to improve the usability of the system.
Interviewing is a technique used for gathering requirements from appropriate stakeholders, such as sponsors, customer proxy, or subject matter experts. The agile team arranges meetings with stakeholders, asks them a series of open-ended questions to determine their needs and desires for the system, and records their responses.
Surveys and questionnaires are a set of questions to answer and an easy technique to get more information about the list of requirements. Unlike interviews, surveys are one-directional questions and not useful to collect new requirements.
Wireframe is a quick and inexpensive tool for verifying that the team's understanding of the proposed system or the features it contains meet stakeholder expectations. Wireframes are a quick mock-up of the product and a quick way to get feedback.
Decision-Making styles in a group are as follows:
User personas describe different types of users of the product. Each persona provides a realistic description of a typical user or group of users who behave similarly or have similar expectations of the system.
The idea behind the Persona is that for software to work effectively, it must be developed for specific people. Unlike actors, personas are not the roles that people play.
Extraordinary types of users that might interact with the system are called extreme personas.
A Persona used in the user-story template could look:
As <persona> ,
I want <what?>
so that <why?>.
Use case diagram is a tool for modeling the functionality of a system using actors and use cases. The use case diagram shows how the user will use the system. A use case is a set of actions, services, and functions. Actors are persons or entities that act within a system.