Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 2 Announcements • Remember, always use your ASU email. • Follow Email etiquette rules, among others: who you are, which course/section is this about, what activity… • Any question regarding grades contact your TA. • Exercise 02 will open after the lecture, it is due as usual, the day before our next lecture
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 8 Prototyping Construction of prototype communication Quick plan Modeling Quick design Construction of prototype Deployment delivery & feedback
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 11 Agile Manifesto • Through this work we have come to value: “Individuals and interactions over processes and tools Working software over comprehensive documentation Customer collaboration over contract negotiation Responding to change over following a plan “ • That is, while there is value in the items on the right, we value the items on the left more.
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 12 Definition software development under which requirements and solutions evolve through the collaborative effort of self-organizing cross-functional teams a) adaptive planning to provide a rapid and flexible response to change b) Incremental lightweight process c) early delivery, d) Feedback-driven empirical approach
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 15 Process and Ceremonies Daily Meeting mary raj … john jane … Ira O X - Product Backlog Sprint Backlog Product Burndown Chart Sprint Sprint Planning Review Retrospective
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 17 Resources Team Members (Work) § Do the work to get the product done (7 +/- 2) § Developers, Testers, Etc. § Skilled and Cross-functional team § Able to work towards a common goal § Team makes decisions § Team is measured constantly
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 18 Process and Ceremonies Daily Meeting mary raj … john jane … Ira O X - Product Backlog Sprint Backlog Product Burndown Chart Sprint Sprint Planning Review Retrospective
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 19 Requirements mary raj … john jane … Ira O X - Product Requirement Task As a (role), I want (feature), So that (benefit)
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 20 Requirements mary raj … john jane … Ira O X - Product Requirement Task As a (role), I want (feature), So that (benefit)
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 21 Product Backlog –A Wish List As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit)
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 22 Quantify and Prioritize As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit)
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 23 Quantify and Prioritize As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) time t t t t t t t t
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 24 Sprints Backlog As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) As a (role), I want (feature), So that (benefit) Sprint 1 t t t t t t t t t t Sprint 2
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 26 Process and Ceremonies Daily Meeting mary raj … john jane … Ira O X - Product Backlog Sprint Backlog Product Burndown Chart Sprint Sprint Planning Review Retrospective
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 29 Applicability • Product development where a software company is developing a small or medium-sized product for sale. • Several software products and apps nowadays are small or medium-sized; therefore, they are developed using an agile approach • Custom system development within an organization, where there is a clear commitment from the customer to become involved in the development process and where there are few external rules and regulations that affect the software.
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 30 Pros • The product is broken down into a set of manageable and understandable chunks. • Unstable requirements do not hold up progress. • The whole team have visibility of everything and consequently team communication is improved. • Customers see on-time delivery of increments and gain feedback on how the product works.
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 31 Cons • The informality of agile development is incompatible with the legal approach to contract definition (requirement specification) that is commonly used in large companies. • Agile methods are most appropriate for new software development rather than software maintenance (documentation). Yet most software costs in large companies come from maintaining their existing software systems. • Agile methods are designed for small co-located teams
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 33 Which one is the best? § It can’t, therefore, be said that one process model is better than another. § While all software projects have to be professionally managed and developed, different process models and techniques are appropriate for different types of system.
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 35 Agile and Plan-based factors: System • How large is the system being developed? o Agile methods are most effective for small to medium. • What type of system is being developed? o Systems that require a lot of analysis before implementation need a detailed design to carry out this analysis. • What is the expected system lifetime? o Long-lifetime systems require documentation to communicate the intentions of the system developers to the support team. • Is the system subject to external regulation? o If a system is regulated, you will probably be required to produce detailed documentation as part of the system safety case.
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 36 Agile and Plan-based factors: Team • How good are the designers and programmers in the development team? o It is sometimes argued that agile methods require higher skill levels than plan-based approaches in which programmers simply translate a detailed design into code. • How is the development team organized? o Design documents may be required if the team has limited communication skills or trust issues. • What support technologies are available? o IDE support for visualisation and program analysis is essential if design documentation is not available.
Javier Gonzalez-Sanchez | CSE360 | Summer 2018 | 37 Agile and Plan-based factors: Organization • Traditional engineering organizations have a culture of plan- based development, as this is the norm in engineering. • Is your organizational practice to develop a detailed system specification? • Will customer representatives be available to provide feedback of system increments? • Can informal agile development fit into the organizational culture (of detailed documentation)?
CSE360 – Introduction to Software Engineering Javier Gonzalez-Sanchez [email protected] Fall 2020 Disclaimer. These slides can only be used as study material for the class CSE360 at ASU. They cannot be distributed or used for another purpose.
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