XP and Agile Development
Total Page:16
File Type:pdf, Size:1020Kb
Load more
Recommended publications
-
The Timeboxing Process Model for Iterative Software Development
The Timeboxing Process Model for Iterative Software Development Pankaj Jalote Department of Computer Science and Engineering Indian Institute of Technology Kanpur – 208016; India Aveejeet Palit, Priya Kurien Infosys Technologies Limited Electronics City Bangalore – 561 229; India Contact: [email protected] ABSTRACT In today’s business where speed is of essence, an iterative development approach that allows the functionality to be delivered in parts has become a necessity and an effective way to manage risks. In an iterative process, the development of a software system is done in increments, each increment forming of an iteration and resulting in a working system. A common iterative approach is to decide what should be developed in an iteration and then plan the iteration accordingly. A somewhat different iterative is approach is to time box different iterations. In this approach, the length of an iteration is fixed and what should be developed in an iteration is adjusted to fit the time box. Generally, the time boxed iterations are executed in sequence, with some overlap where feasible. In this paper we propose the timeboxing process model that takes the concept of time boxed iterations further by adding pipelining concepts to it for permitting overlapped execution of different iterations. In the timeboxing process model, each time boxed iteration is divided into equal length stages, each stage having a defined function and resulting in a clear work product that is handed over to the next stage. With this division into stages, pipelining concepts are employed to have multiple time boxes executing concurrently, leading to a reduction in the delivery time for product releases. -
Agile Software Development and Im- Plementation of Scrumban
Joachim Grotenfelt Agile Software Development and Im- plementation of Scrumban Metropolia University of Applied Sciences Bachelor of Engineering Mobile Solutions Bachelor’s Thesis 30 May 2021 Abstrakt Författare Joachim Grotenfelt Titel Agile software utveckling och Implementation av Scrumban Antal Sidor 31 sidor Datum 30.05.2021 Grad Igenjör YH Utbildningsprogram Mobile Solutions Huvudämne Informations- och kommunikationsteknologi Instruktörer Mikael Lindblad, Projektledare Peter Hjort, Lektor Målet med avhandlingen var att studera agila metoder, hur de används i mjukvaruföretag och hur de påverkar arbetet i ett programvaruutvecklingsteam. Ett annat mål med avhandlingen var att studera bakgrunden till den agila metoden, hur den togs i bruk och hur den påverkar kundnöjdhet. I denna avhandling förklaras några existerande agila metoder, verktygen för hur agila metoder används, samt hur de påverkar programvaruutvecklingsteamet. Avhandlingen fokuserar sig på två agila metoder, Scrum och Kanban, eftersom de ofta används i olika företag. Ett av syftena med denna avhandling var att skapa förståelse för hur Scrumban metoden tas i bruk. Detta projekt granskar fördelarna med att ha ett mjukvaruutvecklingsteam som arbetar med agila processer. Projektet lyckades bra och en arbetsmiljö som använder agila metoder skapades. Fördelen blev att utvecklarteamet kunde göra förändringar när sådana behövdes. Nyckelord Agile, Scrum, Kanban, Scrumban Abstract Joachim Grotenfelt Author Basics of Agile Software Development and Implementation of Title Scrumban Number of Pages 31 pages Date 30.05.2021 Degree Bachelor of Engineering Degree Program Mobile Solutions Professional Major Information- and Communications Technology Instructors Mikael Lindblad, Project Manager Peter Hjort, Senior Lecturer The goal of the thesis is to study the Agile methods and how they affect the work of a soft- ware development team. -
Agile Playbook V2.1—What’S New?
AGILE P L AY B O OK TABLE OF CONTENTS INTRODUCTION ..........................................................................................................4 Who should use this playbook? ................................................................................6 How should you use this playbook? .........................................................................6 Agile Playbook v2.1—What’s new? ...........................................................................6 How and where can you contribute to this playbook?.............................................7 MEET YOUR GUIDES ...................................................................................................8 AN AGILE DELIVERY MODEL ....................................................................................10 GETTING STARTED.....................................................................................................12 THE PLAYS ...................................................................................................................14 Delivery ......................................................................................................................15 Play: Start with Scrum ...........................................................................................15 Play: Seeing success but need more fexibility? Move on to Scrumban ............17 Play: If you are ready to kick of the training wheels, try Kanban .......................18 Value ......................................................................................................................19 -
Extreme Programming Considered Harmful for Reliable Software Development
AVOCA GmbH Extreme Programming Considered Harmful for Reliable Software Development Status: Approved Author(s): Gerold Keefer Version: 1.0 Last change: 06.02.02 21:17 Project phase: Implementation Document file name: ExtremeProgramming.doc Approval Authority: Gerold Keefer Distribution: Public Security Classification: None Number of pages: 1 Extreme Programming Considered Harmful for Reliable Software Development AVOCA GmbH 1 MOTIVATION ................................................................................................................................... 3 2BIAS................................................................................................................................................. 4 3 BENEFITS ........................................................................................................................................ 4 4 DUBIOUS VALUES AND PRACTICES........................................................................................... 5 5 C3 REVISITED ................................................................................................................................. 7 6 MISSING ANSWERS ....................................................................................................................... 7 7 ALTERNATIVES .............................................................................................................................. 8 8 CONCLUSIONS ............................................................................................................................ -
Understanding Continuous Design in F/OSS Projects
Understanding Continuous Design in F/OSS Projects Les Gasser1,2, Walt Scacchi2, Bryan Penne1, and Gabriel Ripoche1,3 Graduate School of Library and Information Science1 University of Illinois, Urbana-Champaign, USA Institute for Software Research2 University of California, Irvine, USA LIMSI-CNRS3 Orsay, France {gasser | bpenne | gripoche @uiuc.edu} {[email protected]} Address for correspondence: Prof. Les Gasser, GSLIS/UIUC, 501 East Daniel Street, Champaign, IL, 61820 USA. Tel: +1-217-265-5021; Fax: +1-217-244-3302; Email: [email protected] Extended Abstract In current research we are studying software maintenance work, bug reporting, and repair in Free/Open Source Software (F/OSS) communities, giving special attention to factors such as knowledge exchange, effectiveness of tool support, social network structures, and organization of project activity. More specifically, we are examining how these factors affect such outcome variables as the time taken to resolve reported problems; the ability to detect interdependent and duplicate problems; the effective scope of repairs (the degree to which the community can address the entire range of software problems that appear, rather than just selected subsets); and the general quality of software. The research process is based on qualitative and computational analysis of large corpuses of large bodies of longitudinal data from Web sites, public repositories, online discussion forums, and online artifacts from F/OSS development projects including networked computer games, Internet/Web infrastructure, X-ray astronomy/deep space imaging, and academic software research. We have access to a number of large collections of current data from these projects, comprising at least six repositories of problem report/analysis activity, with a total of over 500,000 reports, containing approximately 5M individual comments, and involving over 60,000 reporters and developers. -
Managing Defects in an Agile Environment
Managing Defects in an Agile environment Auteur Ron Eringa Managing Defects in an Agile environment Introduction Injecting passion, Agility Teams often struggle with answering the following and quality into your question: “How to manage our Defects in an organisation. Agile environment?”. They start using Scrum as a framework for developing their software and while implementing, they experience trouble on how to deal with the Defects they find/cause along the way. Scrum is a framework that does not explicitly tell you how to handle Defects. The strait forward answer is to treat your Defects as Product Backlog Items that should be added to the Product Backlog. When the priority is set high enough by the Product Owner, they will be picked up by the Development Team in the next Sprint. The application of this is a little bit more difficult and hence should be explained in more detail. RON ERINGA 1. What is a defect? AGILE COACH Wikipedia: “A software bug (or defect) is an error, flaw, After being graduated from the Fontys failure, or fault in a computer program or system that University in Eindhoven, I worked as a Software produces an incorrect or unexpected result, or causes Engineer/Designer for ten years. Although I it to behave in unintended ways. Most bugs arise have always enjoyed technics, helping people from mistakes and errors made by people in either a and organizations are my passion. Especially program’s source code or its design, or in frameworks to deliver better quality together. When people and operating systems used by such programs, and focus towards a common goal, interaction is a few are caused by compilers producing incorrect increasing and energy is released. -
Emerging Themes in Agile Software Development: Introduction to the Special Section on Continuous Value Delivery
ARTICLE IN PRESS JID: INFSOF [m5G; May 14, 2016;7:8 ] Information and Software Technology 0 0 0 (2016) 1–5 Contents lists available at ScienceDirect Information and Software Technology journal homepage: www.elsevier.com/locate/infsof Emerging themes in agile software development: Introduction to the special section on continuous value delivery ∗ Torgeir Dingsøyr a,b, , Casper Lassenius c a SINTEF, Trondheim, Norway b Department of Computer and Information Science, Norwegian University of Science and Technology, Trondheim, Norway c Department of Computer Science and Engineering, Aalto University, Helsinki, Finland a r t i c l e i n f o a b s t r a c t Article history: The relationship between customers and suppliers remains a challenge in agile software development. Received 19 April 2016 Two trends seek to improve this relationship, the increased focus on value and the move towards con- Revised 26 April 2016 tinuous deployment. In this special section on continuous value delivery, we describe these emerging Accepted 27 April 2016 research themes and show the increasing interest in these topics over time. Further, we discuss implica- Available online xxx tions for future research. Keywords: ©2016 The Authors. Published by Elsevier B.V. Agile software development This is an open access article under the CC BY-NC-ND license Software process improvement ( http://creativecommons.org/licenses/by-nc-nd/4.0/ ). Value-based software engineering Requirements engineering Continuous deployment Lean startup Scrum Extreme programming 1. Introduction ous deployment of new features. We describe these two trends as a focus on continuous value delivery. This is a challenging topic. -
A Survey of Agile Development Methodologies
A Survey of Agile Development Methodologies Agile development methodologies are emerging in the software industry. In this chapter, we provide an introduction to agile development methodologies and an overview of four specific methodologies: • Extreme Programming • Crystal Methods • Scrum • Feature Driven Development Plan-driven methods work best when developers can determine the requirements in advance . and when the requirements remain relatively stable, with change rates on the order of one percent per month. -- Barry Boehm [11] Plan-driven methods are those that begin with the solicitation and documentation of a set of requirements that is as complete as possible. Based on these requirements, one can then formulate a plan of development. Usually, the more complete the requirements, the better the plan. Some examples of plan-driven methods are various waterfall approaches and others such as the Personal Software Process (PSP) [28] and the Rational Unified Process (RUP) [30, 31]. An underlying assumption in plan-driven processes is that the requirements are relatively static. On the other hand, iterative methods, such as spiral- model based approaches [12, 14], evolutionary processes described in [5, 22, 32, 33], and recently agile approaches [45] count on change and recognize that the only constant is change. The question is only of the degree and the impact of the change. Beginning in the mid-1990’s, practitioners began finding the rate of change in software requirements increasing well beyond the capabilities of classical development methodologies [11, 27]. The software industry, software technology, and customers expectations were moving very quickly and the customers were becoming increasingly less able to fully state their needs up front. -
LEVERAGING USER STORIES in AGILE TRANSFORMATION a Value-Driven Approach to Documenting Requirements for Agile Teams
LEVERAGING USER STORIES IN AGILE TRANSFORMATION A Value-Driven Approach to Documenting Requirements for Agile Teams Meagan Foster Data & Analytics Intern, IQVIA, Inc. Summer 2020 INTERNSHIP PROJECTS + Connected Devices Project . Requirements development and management for module titles and user interface access . Document an end-to-end diagram for Connected Devices + Clinical Data Repository Tabular Project . Requirements development and management to enable CDR support for password protected SAS and excel-based files + Process Improvement Project . Best practices in creating user stories . “1. Our highest priority is to satisfy the customer through early and continuous delivery of valuable software.” Agile Manifesto PRESENTATION OVERVIEW + Agile Philosophy on Customer Value + Documenting Customer Value with User Stories + Reinforcing Customer Value with Quality Attributes + Navigating Customer Value with the Inspect-Adapt Approach PRESENTATION OVERVIEW + Agile Philosophy on Customer Value + Documenting Customer Value with User Stories + Reinforcing Customer Value with Quality Attributes + Navigating Customer Value with the Inspect-Adapt Approach AGILE TRANSFORMATION • Capterra states that 71% of companies are implementing Agile. • VersionOne reveals that Agile adoption has helped out 98% of companies. • Harvard Business Review declares that 60% of companies experience revenue growth and profits increase after using an Agile approach. • Standish Group Chaos Study reports that Agile success rate is 42%, as compared to Waterfall success rate of 26%. This means Agile is 1.5x more successful than Waterfall model. AGILE IS WAY OF THINKING. • Not everything needs to be figured out Fixed right away. Quality • Get feedback early and often. Estimate • Anticipate and quickly adapt to change. • Focus on bringing value to customers. THE PRODUCT BACKLOG (SCRUM) Implementable items to build features Features planned for delivery Vision, strategy, and ideas for new features and tools FIGURE 1. -
User Stories.Book
User Stories Applied for Agile Software Development Mike Cohn Boston • San Francisco • New York • Toronto • Montreal London • Munich • Paris • Madrid Capetown • Sydney • Tokyo • Singapore • Mexico City Chapter 2 Writing Stories In this chapter we turn our attention to writing the stories. To create good sto- ries we focus on six attributes. A good story is: • Independent • Negotiable • Valuable to users or customers •Estimatable •Small •Testable Bill Wake, author of Extreme Programming Explored and Refactoring Workbook, has suggested the acronym INVEST for these six attributes (Wake 2003a). Independent As much as possible, care should be taken to avoid introducing dependencies between stories. Dependencies between stories lead to prioritization and plan- ning problems. For example, suppose the customer has selected as high priority a story that is dependent on a story that is low priority. Dependencies between stories can also make estimation much harder than it needs to be. For example, suppose we are working on the BigMoneyJobs website and need to write stories for how companies can pay for the job openings they post to our site. We could write these stories: 1. A company can pay for a job posting with a Visa card. 2. A company can pay for a job posting with a MasterCard. 17 18 WRITING STORIES 3. A company can pay for a job posting with an American Express card. Suppose the developers estimate that it will take three days to support the first credit card type (regardless of which it is) and then one day each for the second and third. -
Agile Methodology: Hybrid Approach Scrum and XP Farrukh Musa, Muhammad Ali Tariq
International Journal of Scientific & Engineering Research, Volume 8, Issue 4, April-2017 1405 ISSN 2229-5518 Agile Methodology: Hybrid Approach Scrum and XP Farrukh Musa, Muhammad Ali Tariq Abstract— Nowadays, agile is the most usable process model in IT industry. There are plenty of agile methodologies in the market but all of them have some drawbacks that must be solved. Most commonly used agile methodologies are scrum, extreme programming (XP), lean development etc. This research paper is basically to introduce the new agile methodology i-e hybrid of scrum and XP that overcome the drawback and issues we face in previous agile methodologies. Further there is detail that how it works and when to use along with some advantages. Index Terms— hybrid software engineering methodology, agile approach, Scrum, XP, extreme programming, Scrum with XP. —————————— —————————— 1 INTRODUCTION GILE methodology is now becoming most popular and rapid prototype etc. agile process model requires very limited A usable process model in IT Development industry. In this planning to get started with the project. Changes and en- methodology we discuss certain models such as by nature its hancement can be discussed and implement later on as per Incremental because in this software is developed in incre- client demand to get more efficient and better results. mental, rapid cycle. Results builds in small incremental release The paper is distributed in some major sections; section II will and each release is thoroughly tested to ensure the software be comprised of related work on the different agile method- quality maintainability [1, 2]. In it we invest lesser time on ologies which are already existing and up to date, while Sec- analysis and design phase as compare to other because here tion III deals with the proposed methodology. -
User-Stories-Applied-Mike-Cohn.Pdf
ptg User Stories Applied ptg From the Library of www.wowebook.com The Addison-Wesley Signature Series The Addison-Wesley Signature Series provides readers with practical and authoritative information on the latest trends in modern technology for computer professionals. The series is based on one simple premise: great books come from great authors. Books in the series are personally chosen by expert advi- sors, world-class authors in their own right. These experts are proud to put their signatures on the cov- ers, and their signatures ensure that these thought leaders have worked closely with authors to define topic coverage, book scope, critical content, and overall uniqueness. The expert signatures also symbol- ize a promise to our readers: you are reading a future classic. The Addison-Wesley Signature Series Signers: Kent Beck and Martin Fowler Kent Beck has pioneered people-oriented technologies like JUnit, Extreme Programming, and patterns for software development. Kent is interested in helping teams do well by doing good — finding a style of software development that simultaneously satisfies economic, aesthetic, emotional, and practical con- straints. His books focus on touching the lives of the creators and users of software. Martin Fowler has been a pioneer of object technology in enterprise applications. His central concern is how to design software well. He focuses on getting to the heart of how to build enterprise software that will last well into the future. He is interested in looking behind the specifics of technologies to the patterns, ptg practices, and principles that last for many years; these books should be usable a decade from now.