Agile Development

Transcript

2. Waterfall Model
3. Project Story
4. Be Agile 
6. The Agile Manifesto–a statement of values Process and tools Individuals and interactions over Following a plan Responding to change over Source: www.agilemanifesto.org Comprehensive documentation Working software over Contract negotiation Customer collaboration over
7. Scrum framework •Product owner •ScrumMaster •Team Roles •Sprint planning •Sprint review •Sprint retrospective •Daily scrum meeting Ceremonies •Product backlog •Sprint backlog •Burndown charts Artifacts
9. Product owner • Define the features of the product • Decide on release date and content • Be responsible for the profitability of the product (ROI) • Prioritize features according to market value • Adjust features and priority every iteration, as needed • Accept or reject work results
11. The ScrumMaster • Represents management to the project • Responsible for enacting Scrum values and practices • Removes impediments • Ensure that the team is fully functional and productive • Enable close cooperation across all roles and functions • Shield the team from external interferences
13. The team • Typically 5-9 people • Cross-functional: – Programmers, testers, user experience designers, etc. • Members should be full-time • May be exceptions (e.g., database administrator) • Teams are self-organizing – Ideally, no titles but rarely a possibility • Membership should change only between sprints
14. •Product owner •ScrumMaster •Team Roles Scrum framework •Product backlog •Sprint backlog •Burndown charts Artifacts •Sprint planning •Sprint review •Sprint retrospective •Daily scrum meeting Ceremonies
16. Sprint planning meeting Sprint prioritization • Analyze and evaluate product backlog • Select sprint goal Sprint planning • Decide how to achieve sprint goal (design) • Create sprint backlog (tasks) from product backlog items (user stories / features) • Estimate sprint backlog in hours Sprint goal Sprint backlog Business conditions Team capacity Product backlog Technology Current product
17. Sprint planning • Team selects items from the product backlog they can commit to completing • Sprint backlog is created – Tasks are identified and each is estimated (1-16 hours) – Collaboratively, not done alone by the ScrumMaster • High-level design is considered As a vacation planner, I want to see photos of the hotels. Code the middle tier (8 hours) Code the user interface (4) Write test fixtures (4) Code the foo class (6) Update performance tests (4)
19. The daily scrum • Parameters – Daily – 15-minutes – Stand-up • Not for problem solving – Whole world is invited – Only team members, ScrumMaster, product owner, can talk • Helps avoid other unnecessary meetings
20. Everyone answers 3 questions • These are not status for the ScrumMaster – They are commitments in front of peers What did you do yesterday? What will you do today? Is anything in your way?
22. The sprint review • Team presents what it accomplished during the sprint • Typically takes the form of a demo of new features or underlying architecture • Informal – 2-hour prep time rule – No slides • Whole team participates • Invite the world
24. Sprint retrospective • Periodically take a look at what is and is not working • Typically 15–30 minutes • Done after every sprint • Whole team participates – ScrumMaster – Product owner – Team – Possibly customers and others
25. Start / Stop / Continue • Whole team gathers and discusses what they’d like to: Start doing Stop doing Continue doing This is just one of many ways to do a sprint retrospective.
26. •Product owner •ScrumMaster •Team Roles Scrum framework •Sprint planning •Sprint review •Sprint retrospective •Daily scrum meeting Ceremonies •Product backlog •Sprint backlog •Burndown charts Artifacts
28. Product backlog • The requirements • A list of all desired work on the project • Ideally expressed such that each item has value to the users or customers of the product • Prioritized by the product owner • Reprioritized at the start of each sprint This is the product backlog
29. A sample product backlog Backlog item Estimate Allow a guest to make a reservation 3 As a guest, I want to cancel a reservation. 5 As a guest, I want to change the dates of a reservation. 3 As a hotel employee, I can run RevPAR reports (revenue-per-available-room) 8 Improve exception handling 8 ... 30 ... 50
31. The sprint goal • A short statement of what the work will be focused on during the sprint Database Application Financial services Life Sciences Support features necessary for population genetics studies. Support more technical indicators than company ABC with real-time, streaming data. Make the application run on SQL Server in addition to Oracle.
32. Managing the sprint backlog • Individuals sign up for work of their own choosing – Work is never assigned • Estimated work remaining is updated daily • Any team member can add, delete or change the sprint backlog • Work for the sprint emerges • If work is unclear, define a sprint backlog item with a larger amount of time and break it down later • Update work remaining as more becomes known
33. A sprint backlog Tasks Code the user interface Code the middle tier Test the middle tier Write online help Write the foo class Mon 8 16 8 12 8 Tues 4 12 16 8 Wed Thur 4 11 8 4 Fri 8 8 Add error logging 8 10 16 8 8
35. A sprint burndown chart Hours
36. Hours 40 30 20 10 0 Mon Tue Wed Thu Fri Tasks Code the user interface Code the middle tier Test the middle tier Write online help Mon 8 16 8 12 Tues Wed Thur Fri 4 12 16 7 11 8 10 16 8 50
37. Putting it all together
38. No changes during a sprint • Plan sprint durations around how long you can commit to keeping change out of the sprint Change
40. References • http://cdn.oreillystatic.com/en/assets/1/event/3/Agil e%20Development%20Presentation.pdf • http://www.slideshare.net/ydarias/agile-and-scrum- 35714242 • http://www.mountaingoatsoftware.com/uploads/pr esentations/English-Redistributable-Intro-Scrum.ppt