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10 Tips for Writing Good User Stories

1 Users Come First

As its name suggests, a user story describes how a customer or user employs the product; it is written from the user’s perspective. What’s more, user stories are particularly helpful to capture a specific functionality, such as, searching for a product or making a booking. The following picture illustrates the relationship between the user, the story, and the product functionality (symbolised by the circle).

If you don’t know who the users and customers are and why they would want to use the product, then you should not write any user stories. Carry out the necessary user research first, for example, by observing and interviewing users. Otherwise, you take the risk of writing speculative stories that are based on beliefs and ideas—but not on data and empirical evidence.


2 Use Personas to Discover the Right Stories

A great technique to capture your insights about the users and customers is working with personas. Personas are fictional characters that are based on first-hand knowledge of the target group. They usually consist of a name and a picture; relevant characteristics, behaviours, and attitudes; and a goal. The goal is the benefit the persona wants to achieve, or the problem the character wants to see solved by using the product.

But there is more to it: The persona goals help you discover the right stories: Ask yourself what functionality the product should provide to meet the goals of the personas?


3 Create Stories Collaboratively

A user story is not a specification, but an communication and collaboration tool. Stories should never be handed off to a development team. Instead, they should be embedded in a conversation: The product owner and the team should discuss the stories together.

You can take this approach further and write stories collaboratively, for instance, as part of your product backlog grooming process. This leverages the creativity and the knowledge of the team and results in better user stories.

If you can’t involve the development team in the user story work, then you should  consider using another, more formal technique to capture the product functionality, such as, use cases.


4 Keep your Stories Simple and Concise

Write your stories so that they are easy to understand. Keep them simple and concise. Avoid confusing and ambiguous terms, and use active voice. Focus on what’s important, and leave out the rest. The template below puts the user or customer modelled as a persona into the story and makes its benefit explicit. It is based on by Rachel Davies’ popular template, but I have replaced user role with persona name to connect the story with the relevant persona.

As ,
I want <what?>
so that <why?>.

Use the template when it is helpful, but don’t feel obliged to always apply it. Experiment with different ways to write your stories to understand what works best for you and your team.


5 Start with Epics

An epic is a big, sketchy, coarse-grained story. It is typically broken into several user stories over time—leveraging the user feedback on early prototypes and product increments. You can think of it as a headline and a placeholder for more detailed stories.

Starting with epics allows you to sketch the product functionality without committing to the details. This is particularly helpful for describing new products and features: It allows you to capture the rough scope, and it buys you time to learn more about how to best address the needs of the users.

It also reduces the time and effort required to integrate new insights. If you have many detailed stories in the product backlog, then it’s often tricky and time-consuming to relate feedback to the appropriate items and it carries the risk of introducing inconsistencies.


6 Refine the Stories until They are Ready

Break your epics into smaller, detailed stories until they are ready: clear, feasible, and testable. All development team members should have a shared understanding of the story’s meaning; the story should not too big and comfortably fit into a sprint, and there has to be an effective way to determine if the story is done.


7 Add Acceptance Criteria

As you break epics into smaller stories, remember to add acceptance criteria. Acceptance criteria complement the narrative: They allow you to describe the conditions that have to be fulfilled so that the story is done. The criteria enrich the story, they make it testable, and they ensures that the story can be demoed or released to the users and other stakeholders. As a rule of thumb, I like to use three to five acceptance criteria for detailed stories.


8 Use Paper Cards

User stories emerged in Extreme Programming (XP), and the early XP literature talks about story cards rather than user stories. There is a simple reason: User stories were captured on paper cards. This approach provides three benefits: First, paper cards are cheap and easy to use. Second, they facilitate collaboration: Every one can take a card and jot down an idea. Third, cards can be easily grouped on the table or wall to check for consistency and completeness and to visualise dependencies.  Even if your stories are stored electronically, it is worthwhile to use paper cards when you write new stories.


9 Keep your Stories Visible and Accessible

Stories want to communicate information. Therefore don’t hide them on a network drive, the corporate intranet jungle, or a licensed tool. Make them visible, for instance, by putting them up on the wall. This fosters collaboration, creates transparency, and makes it obvious when you add too many stories too quickly, as you will start  running out of wall space. 

SampleProductCanvas


10 Don’t Solely Rely on User Stories

Creating a great user experience (UX) requires more than user stories. User stories are helpful to capture product functionality, but they are not well suited to describe the user journeys and the visual design. Therefore complement user stories with other techniques, such as, story maps, workflow diagrams, storyboards, sketches, and mockups.

Additionally, user stories are not good capturing technical requirements. If you need to communicate what an architectural element like a component or service should do, then write technical stories or—which is my preference—use a modeling language like UML.

Finally, writing user stories is worthwhile when you develop software that’s likely to be reused. But if you want to quickly create a throwaway prototype or mockup to validate an idea, then writing stories may not be necessary. Remember: User stories are not about documenting requirements; they want to enable you to move fast and develop software as quickly as possible—not to impose any overhead.

 

This article was originally posted at:
http://www.romanpichler.com/blog/10-tips-writing-good-user-stories/

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