Example:

As a marketing manager,
I want to export campaign reports to PDF,
So that I can share results with stakeholders who don't have system access.

Story Types

Type	Template	Example
Feature	As a [persona], I want to [action] so that [benefit]	As a user, I want to filter search results so that I find items faster
Improvement	As a [persona], I need [capability] to [goal]	As a user, I need faster page loads to complete tasks without frustration
Bug Fix	As a [persona], I expect [behavior] when [condition]	As a user, I expect my cart to persist when I refresh the page
Enabler	As a developer, I need to [technical task] to enable [capability]	As a developer, I need to implement caching to enable instant search

Persona Reference

Persona	Typical Needs	Context
End User	Efficiency, simplicity, reliability	Daily feature usage
Administrator	Control, visibility, security	System management
Power User	Automation, customization, shortcuts	Expert workflows
New User	Guidance, learning, safety	Onboarding

Adapt personas to your project. Use specific names when possible (e.g., "store owner" instead of "end user").

INVEST Criteria

Validate every story before adding it to the backlog:

Criterion	Question	Pass If...
Independent	Can this be developed without other uncommitted stories?	No blocking dependencies
Negotiable	Is the implementation flexible?	Multiple approaches possible
Valuable	Does this deliver user or business value?	Clear benefit in "so that"
Estimable	Can the team estimate this?	Understood well enough to size
Small	Can this complete in one iteration?	Reasonably scoped
Testable	Can we verify this is done?	Clear acceptance criteria

Acceptance Criteria

Given-When-Then Template

Given [precondition/context],
When [action/trigger],
Then [expected outcome].

Examples:

Given the user is logged in with valid credentials,
When they click the "Export" button,
Then a PDF download starts within 2 seconds.

Given the user has entered an invalid email format,
When they submit the registration form,
Then an inline error message displays "Please enter a valid email address."

Given the shopping cart contains items,
When the user refreshes the browser,
Then the cart contents remain unchanged.

AC Checklist

Each story should include criteria for applicable categories:

Category	Example
Happy Path	Given valid input, When submitted, Then success message displayed
Validation	Should reject input when required field is empty
Error Handling	Must show user-friendly message when API fails
Performance	Should complete operation within 2 seconds
Accessibility	Must be navigable via keyboard only

Not every category applies to every story. Use judgment.

Minimum Criteria by Story Size

Size	Minimum AC Count
Small (trivial)	2-3 criteria
Medium	4-6 criteria
Large	5-8 criteria
Too large	Split the story

INVEST Failure Patterns

Criterion	Red Flag	Fix
Independent	"After story X is done..."	Combine stories or resequence
Negotiable	Specific implementation in story	Focus on outcome, not solution
Valuable	No "so that" clause	Add benefit statement
Estimable	Team says "no idea"	Spike first, then story
Small	Too large to finish in one iteration	Split into smaller stories
Testable	"System should be better"	Add measurable criteria

Story Splitting

When a story is too large, split using one of these techniques:

Technique	Example
By workflow step	"Create order" -> "Add items" + "Apply discount" + "Submit order"
By persona	"User dashboard" -> "Admin dashboard" + "Member dashboard"
By data type	"Import data" -> "Import CSV" + "Import Excel"
By operation	"Manage users" -> "Add user" + "Edit user" + "Delete user"
Happy path first	"Full feature" -> "Basic flow" + "Error handling" + "Edge cases"

Common Antipatterns

Story Antipatterns

Antipattern	Example	Fix
Solution story	"Implement React component"	"Display user profile information"
Compound story	"Create, edit, and delete users"	Split into three stories
Missing persona	"The system will..."	"As an admin, I want to..."
No benefit	"I want to see a button"	Add "so that [benefit]"
Too vague	"Improve performance"	"Reduce page load to <2 seconds"
Technical jargon	"Implement Redis caching"	"Enable instant search results"

Acceptance Criteria Antipatterns

Antipattern	Example	Fix
Too vague	"Works correctly"	Specific Given-When-Then
Implementation details	"Use PostgreSQL query"	Focus on outcome
Missing unhappy path	Only success scenario	Add error cases
Untestable	"User is happy"	Measurable behavior
Too many	15+ criteria	Split the story

References

Based on agile-product-owner by alirezarezvani (MIT License)
Adapted and reduced to user story focus only (no sprint planning, velocity tracking, or epic breakdown)

user-stories

User Stories

User Story Template