If you’re just starting as a scrum master or product owner, “Can user stories be too small or too big?” is a crucial question for you to consider.
User stories are foundational in scrum and kanban, helping teams grasp what needs to be developed and, more importantly, why.
Determining the right size for user stories is essential for effective sprint management and smooth development processes.
When you get the perfect balance, it can greatly impact the efficiency of your sprints and the overall quality of your product.
The purpose of this post is to explore why the size of a user story matters, and how you can get it just right.
What is a user story, and why does size matter?
User stories are simple, clear descriptions of a feature or function from an end-user perspective.
They typically follow the format: “As a [user role], I want [desired action] so that [benefit or value].”
But why does the size of these stories matter?
Think of a user story as a piece of a puzzle. If the pieces are too small, you might spend too much time focusing on tiny details, slowing down the team’s progress.
On the other hand, if the pieces are too big, you risk creating confusion, delays, and frustration.
Striking the right balance ensures that your team maintains a steady pace and delivers valuable increments of work regularly.
When does a user story become too small?
A user story can be considered too small when it becomes trivial or lacks meaningful value to the user or customer.
Have you ever seen stories like “Change the colour of a button” or “Add a single line of text to a page”?
While technically work items, these micro-tasks don’t provide a standalone benefit to the user. They can clutter the backlog and distract from higher-value work.
Smaller stories also increase the overhead of managing the backlog and can make sprint planning cumbersome.
The team spends more time grooming the backlog and less time delivering value.
Moreover, tiny stories can lead to unnecessary context switching. It makes the team jump from one small task to another without focusing on more significant, cohesive features.
What happens when user stories are too big?
On the flip side, user stories that are too big can be equally problematic and can sometimes call for a 3 amigos meeting.
Big user stories are more challenging to estimate and carry a higher risk of uncertainty. They often span multiple sprints, leading to a lack of focus and potentially creating bottlenecks.
Have you ever had a story that drags on for several sprints, with no clear end in sight? That’s a sign the story is too big.
When a user story is too big, it’s harder to define acceptance criteria clearly.
The team might struggle to understand what “done” looks like, leading to scope creep where more and more tasks get added to the story.
This can impact the team’s velocity and make sprint reviews and retrospectives less effective.
How can you right-size user stories?
So, how can you ensure your user stories are just the right size? The key is finding a balance between being too detailed and too vague.
Here are some practical tips:
1. Use the INVEST criteria
A good starting point is the INVEST acronym: Independent, Negotiable, Valuable, Estimable, Small, and Testable.
Ensuring each story meets these criteria helps keep them appropriately sized.
2. Break down epics
If a user story feels too big, it’s probably an epic. Break it down into smaller stories that can be completed within a single sprint.
Ask yourself, “Can this be split into smaller deliverables without losing value?”
3. Focus on user value
Stories should provide clear value to the user. If a story is too small to deliver any real value, consider combining it with related tasks that together deliver a meaningful outcome.
4. Regular backlog grooming
Regularly review and refine the backlog with the team. This practice ensures stories remain at an appropriate size and that any overly big stories are split early.
5. Use story points wisely
Story points are a great tool for estimating the size of a story. If a story feels like it’s over the team’s usual point threshold, it’s a signal to break it down.
A real-life example of a too big user story
Let’s say your team is working on a new feature for an e-commerce platform to add a user review section for products.
A user story that’s too big might look like this:
- Too big: “As a user, I want to be able to leave a review, rate products, and see other users’ reviews to make better purchasing decisions.”
This story involves multiple actions and could span several sprints. It’s better to break it down:
- Right-sized:
- “As a user, I want to leave a review on a product page so that I can share my feedback.”
- “As a user, I want to rate a product so that others can see the product’s rating.”
- “As a user, I want to see other users’ reviews so I can make an informed purchase decision.”
These smaller stories are easier to estimate, implement, and deliver incrementally, providing value sooner.
What are the benefits of right-sized user stories?
When user stories are well-sized, several benefits emerge:
- Improved focus: The team remains focused on delivering small, manageable pieces of value, leading to better productivity.
- Enhanced collaboration: Smaller stories encourage more frequent discussions among team members, leading to better collaboration.
- Clearer progress tracking: With appropriately sized stories, the team can better track progress and velocity, making sprint planning and forecasting more accurate.
- Higher quality output: Well-sized stories reduce the complexity of testing and review, often leading to a higher quality product.
So, yes user stories can be too small or too big
The challenge for scrum teams is to find the right balance, ensuring that each story is manageable, delivers clear value, and can be completed within a single sprint.
By focusing on right-sizing user stories, teams can improve their workflow, deliver more consistent value, and ultimately build better products.
Next time you’re refining your backlog, ask yourself: Is this story the right size?
You might be surprised at how much more effective your sprint can be with just a little adjustment.
Do you have experiences or tips on right-sizing user stories? Share them in the comments below.
You should also read when it’s appropriate for the development team to reject a product backlog item.
I hope you found this post helpful.
