The Four Characteristics Of The Agile Traditional Video
Agile vs Waterfall Methodology - Difference between Agile and Waterfall - What to choose? The Four Characteristics Of The Agile Traditional
Extreme programming XP is a software development methodology which is intended to improve software quality and responsiveness to changing customer requirements.
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As a type of agile software development[1] [2] [3] it advocates frequent "releases" in short development cycles, which is intended to improve productivity and introduce checkpoints at which new customer requirements can be adopted. Other elements of extreme programming include: programming in pairs or doing extensive code reviewunit testing of all code, not programming features until they are actually neededa flat management structure, code simplicity and clarity, expecting changes in the customer's requirements as time passes and the problem is better understood, and frequent communication with the customer and among Trsditional.
As an example, code reviews are considered a beneficial practice; taken to the extreme, code can be reviewed continuously i.
Charactdristics Kent Beck developed extreme programming during his work on the Chrysler Comprehensive Compensation System C3 payroll project. He began to refine the development methodology used in the project and wrote a book on the methodology Extreme Programming Explainedpublished in October Many extreme-programming practices have been around for some time; the methodology takes " best practices " to extreme levels.
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For example, the "practice of test-first development, planning and writing tests before each micro-increment" was used as early as NASA's Project Mercuryin the early s. A NASA independent test group can write the test procedures, based on formal requirements and logical limits, before programmers write the software Tne integrate it with the hardware. XP takes this concept to the extreme level, writing automated tests sometimes inside software modules which validate the operation of even small sections of software coding, rather than only testing the larger features. Rapidly changing requirements demanded shorter product life-cyclesand often clashed with traditional methods of software development. The Chrysler Comprehensive Compensation System C3 started in order to determine the best way to use object technologies, using the payroll systems at Chrysler as the object of research, with Smalltalk as the language and GemStone as the data access layer.
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Chrysler brought in Kent Beck[5] a prominent Smalltalk practitioner, to do performance tuning on the system, but his role expanded as he noted several problems with the development process. He took this opportunity to propose and implement some changes in development practices - based on his work with his frequent Characteriztics, Ward Cunningham. Beck describes the early conception of the methods: [8]. The first https://amazonia.fiocruz.br/scdp/essay/media-request-css/case-study-2-chapter-6.php I was asked to lead a team, I asked them to do a little bit of the things I thought were sensible, like testing and reviews.
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The second time there was a lot more on the line. I thought, "Damn the torpedoes, at least this will make a good article," [and] asked the team to crank up all the knobs to 10 on the things I thought were essential and leave out everything else.
Beck invited Ron Jeffries to the project to help develop and refine these methods. Jeffries thereafter acted as a coach to instill the practices as habits in the C3 team.
Information about the principles and practices behind XP disseminated to the wider world through discussions on the original wikiCunningham's WikiWikiWeb. Various contributors discussed and expanded upon the ideas, and some spin-off methodologies resulted see agile software development.]
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