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Chapter 3 – Agile software development. The objective of this chapter is to introduce you to agile software development methods. When you have read the chapter, you will: understand the rationale for agile software development methods, the agile manifesto, and the differences between agile and plan-driven development; know the key practices in extreme programming and how these relate to the general principles of agile methods; understand the Scrum approach to agile project management;. | Chapter 3 – Agile Software Development Lecture 1 1 Chapter 3 Agile software development Topics covered Agile methods Plan-driven and agile development Extreme programming Agile project management Scaling agile methods 2 Chapter 3 Agile software development Rapid software development Rapid development and delivery is now often the most important requirement for software systems Businesses operate in a fast –changing requirement and it is practically impossible to produce a set of stable software requirements Software has to evolve quickly to reflect changing business needs. Rapid software development Specification, design and implementation are inter-leaved System is developed as a series of versions with stakeholders involved in version evaluation User interfaces are often developed using an IDE and graphical toolset. 3 Chapter 3 Agile software development Agile methods Dissatisfaction with the overheads involved in software design methods of the 1980s and 1990s led to the creation of | Chapter 3 – Agile Software Development Lecture 1 1 Chapter 3 Agile software development Topics covered Agile methods Plan-driven and agile development Extreme programming Agile project management Scaling agile methods 2 Chapter 3 Agile software development Rapid software development Rapid development and delivery is now often the most important requirement for software systems Businesses operate in a fast –changing requirement and it is practically impossible to produce a set of stable software requirements Software has to evolve quickly to reflect changing business needs. Rapid software development Specification, design and implementation are inter-leaved System is developed as a series of versions with stakeholders involved in version evaluation User interfaces are often developed using an IDE and graphical toolset. 3 Chapter 3 Agile software development Agile methods Dissatisfaction with the overheads involved in software design methods of the 1980s and 1990s led to the creation of agile methods. These methods: Focus on the code rather than the design Are based on an iterative approach to software development Are intended to deliver working software quickly and evolve this quickly to meet changing requirements. The aim of agile methods is to reduce overheads in the software process (e.g. by limiting documentation) and to be able to respond quickly to changing requirements without excessive rework. 4 Chapter 3 Agile software development Agile manifesto We are uncovering better ways of developing
software by doing it and helping others do it.
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. Chapter 3 Agile software development 5 The principles of agile methods Principle Description
