What is a User Story?
A User Story is an agile practice for capturing needs and requirements and describing Product Backlog Items. User stories are one of the primary development artifacts for Scrum project teams.
A user story is a very high-level definition of a requirement, containing enough information to allow developers to produce a reasonable estimate of the effort to implement it.
Basically, user stories help to achieve cross-team transparency on what to build, for whom. In fact, as they are easy to define they can become the standard way to communicate and summarize the feature of the product.
Why is important to use a User Story?
The purpose of using a User Story is to capture natural conversation about what needs to be built in the product from the user point of view.
In fact, It starts the conversation between the one who wants the feature and the one who will build it. It is important to understand intention and create best possible solution with the known limits of architecture and technology.
When Development Team understands why the user wants it and what the user wants to achieve they can come up with set of possible solutions.
How to define a User Story?
The standard structure of a user story is the following:
As <a user>, I want <feature>, so that <problem to solve, need> + Acceptance Criteria.
It is good to group user groups into segments and use a representative of the segment in discussions.
Very useful practice is to create personas. In fact, this helps to decide users in groups and easily understand representation of the user group with name and characteristics.
Keep in mind
When using any Agile Practice it is important to use it as best we can to get the results we expected. in fact, it helps to understand the intention behind the technique to do a better job with it.