I stopped work on the AUP in It describes a simple, easy to understand approach to developing business application software using agile techniques and concepts yet still remaining true to the RUP. I've tried to keep the Agile UP as simple as possible, both in its approach and in its description. The descriptions are simple and to the point, with links to details on the web if you want them.
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The manifesto for agile software development has revolutionized the way companies plan, develop, test and release software. Throwing away years of accumulated orthodoxy, agile development methods have now become the accepted way to develop software. Traditionally projects are delivered in a series of phases that are based on increasing levels of certainty around the system being built:. Instead of phases, projects are broken down into releases and iterations. At the end of each iteration you have a fully functioning system that could be released:.
With agile software development , the requirements for the project do not have to be codified upfront, instead they are prioritized and scheduled for each iteration. There are many different agile software development methods, each of which is described below:.
They have specific features that make them better suited to different situations , but in general, the different agile software development methodologies adhere to the same basic principles:.
Along with XP, it is perhaps the most well-known of the Agile methods, and also the most precisely defined which means that there is a lot of documentation and pre-built process for teams that are willing to adopt the methodology completely.
More Information on Scrum. Scrum is often deployed in conjunction with other agile methods such as Extreme Programming XP since such methods are in reality mostly complimentary, with XP focusing on the engineering continuous integration, test-driven development, etc.
In general, Kanban is a scheduling system for lean and other JIT processes. When used for software development, the aim is to control and manage the flow of features represented by Kanban cards so that the number of features entering the process matches those being completed. More Information on Kanban. The principle behind Kanban that allows it to be incremental and Agile, is limited throughput. With no iterations a Kanban project has no defined start or end points for individual work items; each can start and end independently from one another, and work items have no pre-determined duration for that matter.
Instead, each phase of the lifecycle is recognized as having a limited capacity for work at any one time. The idea developed by Kent Beck was to use best programming practices but take them to the extreme — hence the name. As such, none of the individual concepts of XP are really new, but their application and combination is what makes XP different.
More Information on XP. XP advocates adaptability; recognizing that each project faces different problems, applying those methods that will work and discarding those that will not. Partial XP therefore becomes a true possibility, often combined with Scrum , which has gaps in its definition particularly suited to adoption of XP practices.
XP embraces standard agile principles such as short iterations ; requirements being loosely defined with user stories until they are needed; almost immediate and regular testing ; close, on-site stakeholder involvement with a rapid feedback loop ; and team responsibility for success or failure.
RUP is process-heavy, and although the AUP is intended to conform to all the principles of the Agile Manifesto, it debatable how well it succeeds. For example, Agile methods should support self-organizing teams with no management hierarchy , however it is hard to ignore the fact that the AUP has, to some degree, inherited the process-heavy nature of its parent, RUP.
The counter-argument is that the AUP does not enforce any of the process guidelines it offers. As with some other Agile methods, initial requirements elicitation is excluded as is any delivery process at the back end.
The Agile Unified Process is more up-front loaded than most Agile methods, requiring a considerable amount of modeling before implementation begins, which in turn demands some degree of early requirements analysis. While this is not a bad thing, care must be taken not to go too far and do waterfall-like detailed requirements analysis. Further, the proposed incremental development releases between production releases are not necessarily production quality and so again, the lifecycle can appear more waterfall than Agile.
The Rapid Application Development RAD is an iterative and incremental method which relies heavily on prototyping in order to obtain feedback from stakeholders. However, this requires early development of the GUI which can produce wasteful discarded versions and de-emphasize underlying functionality.
Like most agile development methods, DSDM Atern puts quality and schedule first , leaving functionality as the lone variable. The method of prioritization used is called MoSCoW , offering four simple requirements categories:. Alongside all the standard principles that define Agile processes such as stakeholder involvement, and build early and often, DSDM Atern also advocates a degree of formal tracking and reporting which is not so common amongst Agile methods. DSDM Atern addresses the narrow scope of some other methods such as Scrum by including pre and post-development phases in its purview making it a true project management process as opposed to a focused development process.
It is also a method with a detailed process description and therefore it can take some time to embrace DSDM Atern fully. RUP was a framework from which elements could be used for each project as necessary, which was a good job really as over the years it grew to be humongous and it is highly improbable that any single project used it all. As with its early forbears, DAD offers more than any single project would want and, in some cases, even proposes a number of alternative solutions from which to choose.
Even if it is not adopted in full, DAD offers ideas that can be integrated into other project environments. Feature-driven development FDD is an iterative and incremental software development process that follows the principles of the agile manifesto. The idea is to develop the high-level features, scope and domain object model and then use that to plan, design, develop and test the specific requirements and tasks based on the overarching feature that they belong to.
More Information on Feature-Driven Development. The idea is that developers generally write their tests after the code is written and therefore are only testing the functionality as they wrote it, as opposed to testing it to make sure it works the way it was actually intended! More Information on Test-Driven Development. The Rapid Application Development RAD approach was championed by James Martin in his book of the same name in , although the process had been around for some time before that.
RAD is an iterative and incremental method which relies heavily on prototyping in order to obtain feedback from stakeholders. The idea of RAD is to build a functioning prototype which the stakeholders can use to visualize the intended functionality. This prototype is then successively improved to eventually become a robust application that meets the intended functionality.
RAD is not always considered an agile approach and in the relative lack of discipline in the method led to the creation of the DSDM Consortium to develop a formalized independent RAD framework incorporating Agile principles. Unlike traditional agile which is project-focused, SAFe scales up agile to work across large distributed programs and entire organizations:. Image is Copyright Scaled Agile Inc. SAFe is based on a number of immutable, underlying Lean and Agile principles.
These are the fundamental tenets, the basic truths and economic underpinnings that drive the roles and practices of SAFe:. When your company requires better agile software development tools, there are a lot of choices in the marketplace. However, if you want the best in agile software development with there is only one solution. In addition, we provide superb technical support that ensures that enquiries and questions are dealt with in a timely and professional manner. To learn more about SpiraTeam and how it can improve your agile software development processes please:.
One of the key tenets of most agile methods is that fully integrated, tested and releasable code is available at all times. When you couple this requirement with the accelerated timeframes possible with agile methodologies, manual testing alone is not going to cut it.
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Therefore, it is critical that tests created one day, continue to work seamlessly the next. Rapise comes with a built-in machine learning engine that records multiple different ways to locate each UI object and measures that against user feedback to determine the probabilistic likelihood of a match.
This means that even when you change the UI, Rapise can still execute the test and determine if there is a failure or not. To learn more about Rapise and how it can improve your agile software testing please:. SpiraTeam brings your teams together, managing the entire application lifecycle. SpiraPlan lets you manage your programs and portfolio of projects like never before. Orchestrates your automated regression testing, functional, load and performance. The ultimate test automation platform for web, mobile, and desktop applications.
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Agile Unified Process
But of course, that kind of definition is a little difficult to make heads or tails of — especially to us regular people not used to techspeak and programming jargon. Development Model. The Rational Unified Process is, first and foremost, a development model. It is used to effectively implement approaches to developing software — approaches that are commercially proven. These are then used throughout the entire software development lifecycle.
What is Agile Software Development?
It describes a simple, easy to understand approach to developing business application software using agile techniques and concepts yet still remaining true to the RUP. Stay up to date on the latest developments in Internet terminology with a free newsletter from Webopedia. Join to subscribe now. From A3 to ZZZ we list 1, text message and online chat abbreviations to help you translate and understand today's texting lingo. Includes Top