User story slicing exercise
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The document discusses user story slicing in agile development, introducing techniques for creating thinner, more manageable user stories while still maintaining verticality. It outlines the benefits of thinner stories, such as quicker learning, reduced risk, and increased stakeholder satisfaction. Various patterns for slicing stories are presented, including happy/unhappy paths, data variations, and operations, as well as practical examples to illustrate these concepts.
User story slicing exercise
- 1. User Story Slicing exercise Paulo Clavijo Esteban (@pclavijo) v2.0 - September 2020 Cork Software Crafters, Ireland
- 2. Software Engineer at Dell-EMC Founder Cork Software Crafters Cork Software Crafters Paulo Clavijo Esteban @pclavijo paucls.wordpress.com github.com/paucls twitter.com/pclavijo About me
- 4. Agile work item types VSTS agile work item types explained, Keith Williams Paulo Clavijo (@pclavijo)
- 5. INVEST INVEST is a simple guide to write meaningful user stories introduced by Bill Wake: ● Independent, demo-able, potentially release-able ● Negotiable ● Valuable ● Estimable ● Small ● Testable Paulo Clavijo (@pclavijo)
- 6. Story Story = vertical, testable, user-valuable. Cuts across multiple architectural layers. UI API BE ... Story Users Paulo Clavijo (@pclavijo)
- 7. Story example of a vertical User Story: Acceptance Criteria are conditions of satisfaction. This story is "done" when the detailed functionalities are completed. - Verify that I can log into the system - Verify that the date of my last login will be remembered - Verify that I cannot navigate back to the landing page without first logging in - ... As a ATM end user I must be able to log into my account using card and PIN In order to perform transactions Paulo Clavijo (@pclavijo)
- 8. Story slicing Story slicing = making thinner stories (but still vertical) Minutes Hours Days Weeks Months small big Paulo Clavijo (@pclavijo)
- 10. Why thinner stories? ● Learn faster. ● Less risk (less time “underwater”). ● Deliver value more often. ● Happier users, stakeholders. ● More in-sync with other people & teams. ● Better product earlier. ● Better prioritizations. ● More business options. ● Sense of velocity. ● Easier planning. ● ... Paulo Clavijo (@pclavijo)
- 11. Paulo Clavijo (@pclavijo) Why thinner stories?
- 12. How to slice a user story?
- 13. Patterns for slicing stories ● Happy vs. Unhappy Path (e.g. enter credit card info, credit card is expired) ● Business Rule Variations ● Major Effort (e.g. add to shopping cart, add to wishlist, etc.) ● Simple/Complex (e.g. ship to single address) ● Operations (e.g. CRUD) ● Variations in Data ● Variations in Interfaces (e.g. mobile, tablet, PC) ● Defer System Qualities (e.g. performance, logging, etc.) ● Workflow Steps (e.g. steps to checkout at an online store) ● Break Out a Spike ● ... Paulo Clavijo (@pclavijo)
- 14. Patterns for slicing stories Patterns for Splitting User Stories, Richard Lawrence
- 15. Practice time
- 16. Patterns for slicing stories As a content manager, I can create new stories. … Spanish. … in German. … in English. … etc. Paulo Clavijo (@pclavijo)
- 17. Patterns for slicing stories Variations in Data As a content manager, I can create new stories. … Spanish. … in German. … in English. … etc. Paulo Clavijo (@pclavijo)
- 18. Patterns for slicing stories As a user , I can search for flights between two destinations. … using simple data input. … with a fancy calendar UI. Paulo Clavijo (@pclavijo)
- 19. Patterns for slicing stories Variations in Interfaces As a user , I can search for flights between two destinations. … using simple data input. … with a fancy calendar UI. Paulo Clavijo (@pclavijo)
- 20. Patterns for slicing stories As a user , I can search for flights between two destinations. ... (slow - just get it done, show a "searching" animation). … (in under 5 seconds). Paulo Clavijo (@pclavijo)
- 21. Patterns for slicing stories Defer System Qualities (performance) As a user , I can search for flights between two destinations. ... (slow - just get it done, show a "searching" animation). … (in under 5 seconds). Paulo Clavijo (@pclavijo)
- 22. Patterns for slicing stories As a user , I can search for flights between two destinations. … using flexible dates. … including nearby airports. … specifying a max number of stops. … etc. Paulo Clavijo (@pclavijo)
- 23. Patterns for slicing stories Simple/Complex As a user , I can search for flights between two destinations. … using flexible dates. … including nearby airports. … specifying a max number of stops. … etc. Paulo Clavijo (@pclavijo)
- 24. Patterns for slicing stories As a user, I can manage my account. … I can edit my account settings. … I can cancel my account. … I can sign up for an account. Paulo Clavijo (@pclavijo)
- 25. Patterns for slicing stories Operations (e.g. CRUD) As a user, I can manage my account. … I can edit my account settings. … I can cancel my account. … I can sign up for an account. Paulo Clavijo (@pclavijo)
- 26. Practice time
- 27. Order price calculator ● The product is is a point of sale application with user interface, three inputs and one output. ● Accept three inputs from the user: ○ How many items ○ Price per item ○ 2-letter state code ● Output the total price of the order. Give a discount based on the total price, then add state tax based on the state code and discounted price. Paulo Clavijo (@pclavijo) Order value Discount rate $1,000 3% $5,000 5% $7,000 7% $10,000 10% $50,000 15% State Tax rate UT 6.85% NV 8.00% TX 6.25% AL 4.00% CA 8.25%
- 28. References - Elephant Carpaccio exercise by Alistair Cockburn. - User Stories, Mike Cohn - Vertical Slice, Wikipedia - New Story Splitting Resource, Richard Lawrence. - User Stories: Making the Vertical Slice, Kimberly Poremski. - 10 powerful strategies for breaking down Product Backlog Items, Christiaan Verwijs - VSTS agile work item types explained, Keith Williams Paulo Clavijo (@pclavijo)
- 29. ● What went well? ● What problems did you encounter? ● What have you learned? ● What surprised you? Paulo Clavijo (@pclavijo) Retrospective