Waterfall Methodology Essay

Cost and resource needs are higher for traditional than Agile due to Waterfall’s sequential development phase of all requirements determined in the beginning, software design and finally implementation of master design. The need for all information up front takes substantial time to gather and the sequential design does not allow for project changes as the flow enters into the programming stage. With Agile, costs remain low because there exists an incremental and iterative approach to the project, meaning less time is used to collect all requirements up front, the

Using the waterfall approach the system developers will be able to focus on one piece of the system and move on each part separately. This will give the design team more time to focus on small sections of the new coding. Moving from one stage to the next means that each step has been checked thoroughly and is completed.

On the other hand, Agile methodology is a development method that promotes teamwork and flexibility throughout the life-cycle; it is a development method that supports using a small, cross functional team to provide software frequently in small increments on a regular cycle. It implements regular contact with employees and is more flexible compared to the Waterfall Method. There are several different Agile software development methodologies like Crystal Methods, XP, Dynamic System Development Model (DSDM), and Scrum, all examples are focused on flexibility and focuses on keeping code simple, testing

Agile is an iterative and incremental (evolutionary) approach to software development which is performed in a highly collaborative manner by self-organizing teams within an effective governance framework, with "just enough" ceremony, that produces high quality solutions, in a cost effective and timely manner which meets the changing needs of its stakeholders [1].

In addition to flexibility and responsiveness, Agile project management focuses on continuous planning, execution, and feedback. Agile methods are designed to adapt quickly to changes; whereas more traditional methods focus on planning the future in detail. Agile methodologies are able to more efficiently bring advances to a project (City A.M., 2015). Research shows that agile methodologies are increasingly popular because it helps employees avoid delivering a wasting time completing a project that is later realized to be the complete antithesis of what was truly needed (Pozzebon, 2015). In short, “agile methodologies enable you to do is deliver something quickly but then adapt it and change it at a given point in time based on what you now know and what you 've already implemented” (Sunday Business Post, 2012)). Agile is juxtapose to traditional project management. Traditional project management methodology is focused on the sequential lifecycle of a project, referred to as waterfall. Waterfall projects are common in the construction of infrastructure such as the construction of a bridge, electrical substation or a highway. The waterfall

Waterfall method is one of the traditional software developing method that has been implementing for decades. Usually, clients have requests, then software developers create an initial paln; after client approves the plan, developers follow through the plan; at the end, developers test and finish the task. Upon clients’ additional requests or tests, developers add up the extra features, but in most of the case, it would be too late or too hard to change. The entire process is not very communicative or translucent since clients and developers generally meet just once or twice throughout the project. In the article Why Making Software is so Difficult the author mentioned that software production is very

One of the most prevalent approaches companies utilize today is Agile. The Agile approach was developed to mitigate many of the shortcomings of Waterfall. “The agile development

The waterfall model was legally introduced as an idea through a paper that had been published by a man called Winston Royce in the year 1970. However, due to the waterfall model being introduced by Winston Royce himself, it had been introduced as an example of a flawed software development method, which was vulnerable due to its shortcomings. The waterfall model philosophy had been inherited from the hardware manufacture and construction strategies that had been in practice in the year 1970s; therefore it had a structured approach to the software development itself. In comparison to the agile methodology, which developed in the year 1990s where the developers had decided to break away from the traditional structured, segmented and administrative approaches, which were being made to the developed software, and progressed towards more of the flexible development styles. The term Agile can be referred to as being lightweight methods, which had been declared in a research paper in the year 1974 by Edmonds. Furthermore, some of the most noticeable and common agile methods of the software development that subsequently had been evolved were known as Scum in the year 1995, 'Extreme Programming ' in 1996, 'Adaptive Software Development ', 'Dynamic Systems Development Method ' in 1995 and 'Feature Driven Development '. In the year 2001, a team of developers in the agile software development had declared the agile manifesto. The agile

The important thing here to mention is that each method consists of activities specific only to them. These activities are yet another difference between the waterfall and agile method. The waterfall model emphasizes planning while the agile method stresses flexibility more. Waterfall model groups its activities in phases, where each phase is different and has its purpose. These phases include planning phase, analysis phase, design phase, implementation phase, and support phase. [1] Because the development process goes from phase to phase, it is crucial to carefully plan each one out. Once you move to the next phase, there is no going back. This model is very simple and easy to understand and use. However, when the system is put to a test, if it does not satisfy all the requirements, then the entire system must be redesigned, which is a very inefficient and costly job to do. This is the biggest weakness of the waterfall approach and that is why this model is best suited for systems with well-defined requirements as well as those with a lower chance to change in the near future. In contrast to the waterfall method, the agile method uses the iterative approach to systems development. This way, all the phases that are previously mentioned in the waterfall model are also present, but they are repeated in each iteration. For this reason, detailed planning is unnecessary because, at the end of each iteration, the prototype is tested and improvements are made. Also, it is much easier for clients to be closely involved with the whole process of development. Being able to actually see the system’s prototype not only helps clients in forming their image of what they can expect in the end, but also helps developers understand the clients’ vision of the system. Although the collaboration between developers and clients is positive and most certainly welcome, implementing all ideas that are

Unlike waterfall development methodology, agile foresees the documentation but is initially unwilling to adapt such as adding a lot new facets to the development model. Gabe, M. said, "Agile methodologies attempt to capture and use the dynamics of change inherent in software development in the development process itself rather than resisting the ever-present and quickly changing environment.". Demand of traditional methods complete and accurate requirement before the development; agile methods presume that change is strict, unavoidable and must be embraced throughout the cycle of product development. Cao, L. and Ramesh, B. believes individuals who fill those roles are much more important than the roles that people fill. Fowler also believes that each talented individual brings something unique to a team that are developing the system and disagrees with the application of engineering

The disadvantages of the waterfall methodology we’re, in essence, “resolved” by implementing an incremental approach, with the introduction of the Agile methodology approach. The Agile approach introduced a much more simplistic design that included modules broken down into prioritized “sprints”. These sprints were recognized as a benefit to many project management teams as they allowed project managers the ability to perform enhanced evaluations on a much more frequent basis. This also provides increased opportunities for the discovery of bugs and customer feedback as completed phases are rolled out. One of the biggest disadvantages to the utilizing the Agile methodology is not having a clear and concise project deadline, the projects end result and budgetary confinements can vary greatly and the end result can be grossly different than what the original scoping plan had planned intended it to

Agile development is a term used in software development to describe incremental software development methodologies. It is a type of incremental model because, in incremental model the whole requirement is separated into many separated builds. Here, the software is developed in incremental, rapid cycles resulting in small incremental releases with each release building on its former functionality. Each release is critically tested to make sure that the software quality is maintained.

Software development is one of the highest demands in all over the world. We use software development techniques to solve the problems and to satisfy customers. Agile software development is a conceptual framework for software; it is also a group of software development methods based on iterative development. In 2001, agile software development was created by seventeen people with a desire to find alternative approaches to software development. The most important thing about agile methods are team work, conveying information to the team, face to face conversation, and satisfy the customer. There are various methodologies but I am going to describe the most popular ones.

A software development methodology is a structure imposed on the development of a software product. It is used to structure, plan and control the process of developing an information system including procedures, techniques, tools and documentation aids. A wide variety of methodologies have evolved over the years, majority aggress that all these methodologies are distinguished into two categories – Heavyweight or Lightweight. Heavyweight methodologies are also known as traditional methodologies which approach system development with standard, well-defined processes such as Waterfall, Spiral and Unified Process. Lightweight methodologies

A system is created to solve problems, for example, work out someone’s wages. The systems approach can be said to be an organised way of dealing and solving the problem.