Agile Requirements Engineering. Michael Ehresmann, Michael Rölle, Christian Sporer

Transcription

1 Agile Requirements Engineering Michael Ehresmann, Michael Rölle, Christian Sporer

2 Insiders Technologies Leading vendor intelligent document processing and business process optimization Page Insiders Technologies

3 Insiders Technologies Founded 1998 German Research Center for Artificial Intelligence (DFKI) 120 Employees Page Insiders Technologies

4 More than 800 Seite Insiders Technologies

5 Insiders Technologies Industries: Insurance & financial services Seite Insiders Technologies

6 Insiders Technologies Industries: Manufacturing, Retail Seite Insiders Technologies

7 Insiders world-wide Seite Insiders Technologies

8 Multichannel Management Seite Insiders Technologies

9 Multichannel-Management 1 Anbindung aller Eingangskanäle 2 Automatische Analyse 3 Nachbearbeitung 4 Intelligente Kopplung an Geschäftsprozesse Reporting Klassifikation Extraktion ERP Verifikation CRM Archiv Analysedienst Konfiguration Administration Seite Insiders Technologies

10 2 1 NACHBEARBEITUNG DER AUSGELESENEN DATEN KLASSIFIKATION UND EXTRAKTION DER RELEVANTEN DATEN A B C D INTELLIGENTE KOPPLUNG AN GESCHÄFTSPROZESSE PDF/A ARCHIV 3 CRM/ERP Seite Insiders Technologies

11 Working Fields Image Processing Self-Learning Autoadaption Domain Specific Language Search Technologies Content Classification Seite Insiders Technologies

12 Technologies Seite Insiders Technologies

13 Web Verifier Seite Insiders Technologies

14 Insiders App Seite Insiders Technologies

15 INTELLIGENT Seite Insiders Technologies

16 smart PILOT Seite Insiders Technologies

17 Insiders Technologies Insiders-technologies.de Page Insiders Technologies

18 Research & Development Joint R&D Lab Seite Insiders Technologies

19 Insiders Technologies is a Seite Insiders Technologies

20 Design Thinking Scrum & extreme Programming Seite Insiders Technologies

21 Design Bring different expertise together Put the customer into the center empathy phase Set up a space for creativity Let the team produce prototypes Fail early and often - Test prototypes and learn Find best ideas and solutions Seite Insiders Technologies

22 Seite Insiders Technologies

23 The Product Backlog Requirements Document Ordered Featurelist Product Backlog Item Seite Insiders Technologies

24 The Product Backlog HIGH PRIORITY - ORDER Product Backlog Item LOW Seite Insiders Technologies

25 The Product Backlog Prouct Backlog Itemem User Stories Examples Use Cases Seite Insiders Technologies

26 A promise for a conversation User Story Seite Insiders Technologies

27 What is a good User Story? Independent Negotiable Valuable Estimable Small Testable Seite Insiders Technologies

28 Community focus in last 10 years Build right or Right product? Build right Business failure Success Specification by example Right product Useless crap Maintenance nightmare Seite Insiders Technologies

29 The process business goals deriving scope from goals scope (user stories, ) specifying collaboratively illustrating using examples specification with examples key examples refining the specification Seite Insiders Technologies

30 Deriving scope from goals Seite Insiders Technologies

31 Deriving scope from goals As a jet pilot, I want the F16 to fly Mach 2.5, so that I can espace any fight. Seite Insiders Technologies

32 Deriving scope from goals Seite Insiders Technologies

33 The process business goals deriving scope from goals scope (user stories, ) specifying collaboratively illustrating using examples specification with examples key examples refining the specification Seite Insiders Technologies

34 Specify collaboratively Developer Tester Business Analyst Seite Insiders Technologies

35 Illustrating using examples Best Practices Realistic examples No abstract equivalence classes (e.g. smaller than 10) No combinatorial task to find examples only key examples No clean copy use pen & paper Lo-Fi prototypes for the GUI Play with the data to find new examples Seite Insiders Technologies

36 The process business goals deriving scope from goals scope (user stories, ) specifying collaboratively illustrating using examples specification with examples key examples refining the specification Seite Insiders Technologies

37 Refining the specification Rules Free delivery is offered to VIP customers once they purchase a certain number of books. The minimum number of books to get free delivery is five Free delivery is not offered to regular customers Free delivery is not offered to VIP customers buying anything other than books Examples Customer type Cart contents Delivery VIP 5 books Free VIP 4 books Standard Regular 10 books Standard VIP 5 washing machines Standard VIP 5 books, 1 washing machine Standard Seite Insiders Technologies

38 An Example CPU RAM HDD Mainboard possible stock states for parts: Available Ordered Out of stock Use Context As a customer I want to see the availability of a computer configuration so that I can change my configuration based on what is available. Seite Insiders Technologies

39 An Example CPU possible stock Let s states for specify parts: RAM Available Ordered HDD collaboratively! Out of stock Mainboard Use Context As a customer I want to see the availability of a computer configuration so that I can change my configuration based on what is available. Seite Insiders Technologies

40 The Solution Rules If all parts are available the computer is available If at least one part is out of stock, then the computer is out of stock If no part is out of stock and at least one part is ordered, then the computer is ordered (An empty or incomplete configuration is not orderable) Seite Insiders Technologies

41 Agile Planning Backlog Managment Seite Insiders Technologies

42 Rank Order essential Product Backlog Item dispensable Seite Insiders Technologies

43 Level of Detail fine-grained i.e., small user stories 20 % 80 % Product Backlog Item size coarse-grained i.e., epics Seite Insiders Technologies

44 Backlog Grooming Product Backlog Item Product Backlog Item Seite Insiders Technologies

45 Backlog Grooming rearrange split Seite Insiders Technologies

46 How to estimate? 1 Seite Insiders Technologies

47 Choose a reference 1 Seite Insiders Technologies

48 Estimate the size 1 possible values: 0, ½, 1, 2, 3, 5, 8, 13, 20, 40, 100, Seite Insiders Technologies

49 Estimate the size 1 possible values: 0, ½, 1, 2, 3, 5, 8, 13, 20, 40, 100, Seite Insiders Technologies

50 Estimate the size 1 possible values: 0, ½, 1, 2, 3, 5, 8, 13, 20, 40, 100, Seite Insiders Technologies

51 Relative Estimation Magic Estimation Game! Seite Insiders Technologies

52 Magic Estimation Game Seite 54 2/5/2015 Insiders Technologies

53 Magic Estimation Game Draw different columns on a board. Label each column with one number representing the size of the items. The Product Owner presents each item to the team. The Product Owner distributes the items randomly and evenly among the team. Each team member chooses the right column (i.e. size) for his items. Once all items are on the board, the team members can change other estimations. Items that often change columns are removed from the board and discussed afterwards. Using the Magic Estimation Game, you can estimate a complete backlog within one or two hours! Seite Insiders Technologies

54 Release Planning Iteration 1 Iteration 2 Iteration 3 Release 1 Iteration 4 Product Backlog Item Estimates are measured in story points. I know my team can implement 20 story points in one iteration. If the product backlog contains 80 points of items, we will need 4 iterations. Seite Insiders Technologies

55 Story Map 2 dimensional backlog Epics Stories Seite Insiders Technologies

56 Story Map 2 dimensional backlog Find the epics the big stories - for your product Bring the epics into the right order. The most important epic is on the top left. After that, assign each backlog item to the corresponding epic. Order the Items for instance with lines as priority. In the scope of an epic, it should be very easy to order the items. The first line in the Story Map is your smallest possible product. Seite Insiders Technologies

57 Conclusion Agile specification is teamwork. The customer is part of the team. Backlog grooming is a steady process. For each requirement, choose the right technique. Do not rely on a single specification technique. Prioritize the requirements on the basis of their business value. Seite Insiders Technologies

58 The books Gojko Adzic: Specification by Example: How Successful Teams Deliver the Right Software, Kent Beck: Extreme Programming Explained: Embrace Change. Addison-Wesley, Mike Cohn: User Stories Applied. For Agile Software Development. Addison-Wesley, Mike Cohn: Agile Product Management with Scrum: Creating Products That Customers Love. Addison-Wesley, Robert C. Martin: Agile Estimating and Planning. Prentice Hall, Ken Schwaber: Agile Software Development with Scrum. PEARSON STUDIUM, Seite Insiders Technologies

59 Exercise Specification by Example Friday, Febrary 13th 8:00 9:30 am Seite Insiders Technologies