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Contrast methods of agile and waterfall
Contrast methods of agile and waterfall
Strengths and Weaknesses of Waterfall Approach for Software Development
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Agile Project management is one of the industries dominating methodology for project management in IT. It is an incremental and iterative way to manage the build and design activities for constructing an IT product, services, and project development in manner which is highly interactive and flexible. In this methodology, scope is defined in granularity that is appropriate with time horizon and checked with the agreement on each feature with the customer. In this methodology work steps are divided with feature breakdown structures. In order to track the progress of the project progress charts are used instead of Gantt charts. Cross-functional and test-driven development teams starts working from the very beginning of the project to provide quality assurance and quality control till the completion. Process of finding and removing bugs is done through iterations and then present to the customer. With the help of Agile approach teams can easily address the core risks of the project throughout the course of development (Thummadi, 2012). Agile Methodology Agile methodology appeared to be a utility for IT projects at first though on later stages it is being employed in project management processes of every field. It can be simply described as “employing the empowered teams for the best process which incorporates customer’s involvement, it’s the ability to quickly analyze and control change to the scope of project at inception and through the implementation of the project. Agile management helps to share the idea of implementation with the stakeholders, and define the project in effective manner with team inputs, effective project monitoring, immediate fixing in case of bugs, sprints and iterations assigned to task groups and frequen... ... middle of paper ... ... (2013). Role of Agile Methodology in Software Development. Data retrieved from: http://www.ijcsmc.com/docs/papers/October2013/V2I10201315.pdf Thummadi, B. V., Lyytinen, K., & Berente, N. (2012). Iterations in software development processes: A comparison of agile and waterfall software development projects. In 7th Pre-ICIS International Research Workshop on Information Technology Project Management (IRWITPM 2012) (p. 5). Data retrieved from: http://c.ymcdn.com/sites/start.aisnet.org/resource/group/b11928ad-01b7-4939-bfe9-0750223c2f4e/irwitpm2022_full_proceedings.pdf#page=5 Windmüller, S., Neubauer, J., Steffen, B., Howar, F., & Bauer, O. (2013). Active continuous quality control. In Proceedings of the 16th International ACM Sigsoft symposium on Component-based software engineering (pp. 111-120). ACM. Data retrieved from: http://dl.acm.org/citation.cfm?id=2465469
It is possible to have a singular methodology for project management to specify morality and ethics when dealing with customers. Application of agile project management approaches like Atern offer a more inclusive approach for stakeholders including consistent update and revision of strategies. When the project manager violates protocol, all stakeholders should come together, clarify issues of violation, and set standards for all to follow.
The Systems Development Life Cycle (SDLC) consists of phases used in developing a piece of software. It is the plan of how to develop and maintain software, and when necessary, replace that software. In 2007 during my hospital’s transition to a new software system, I was fortunate enough to be included in the process. I did not get involved until the implementation phase, but from then on, until now, I remain very active in the process. I decided to highlight the Waterfall Model of SDLC. The Waterfall Model is a “sequential development process” with each phase continuing in a line (McGonigle and Mastrian, 2012, p. 205).
Agile versus Waterfall: A Software Development Comparison and Contrast Waterfall development and agile software development approaches have been the conversation at watercoolers in Information Technology (IT) departments. Which software development approach is most effective? Should the decision be made by industry or by project? Is the company considered archaic if they don’t embrace the more agile software development method? Each development method has something to offer.
During the past fifty years, some new software development approaches were introduced according to software development companies. Most of software companies try to produce valuable software in short time period with minimal costs and changing environments. Agile is one of them which are use in software development companies. This paper presents a review of agile methodology and describes the differences between them and when we use them.
Most agile development methods break product development work into small increments that minimize the amount of up-front planning and design. Iterations are short time frames that typically last from one to four weeks. Iteration involves a cross-functional team working in all functions: planning, analysis, design, coding, unit testing, and acceptance testing. At the end of the iteration, a
Agile software development is a group of software development methods based on iterative and incremental development, where requirements and solutions evolve through collaboration between self-organizing, cross-functional teams. It promotes adaptive planning, evolutionary development and delivery, a time-boxed iterative approach, and encourages rapid and flexible response to change.
Consequentially, the Waterfall consists of seven procedural steps followed in linear order, but possess small gates where information, specifications, and designs are reviewed. The seven procedural steps performed by software companies, according to Lotz (2013): “1. Gather and document requirements, 2. Design, 3. Code and unit test, 4. Perform system testing, perform user acceptance testing (UAT), 6. Fix any issues, and 7. Deliver the finished product.” However, the Waterfall methodology clear and defined linear plan provides development teams distinct guidelines for each phase of development, but the methodology still possesses pros and cons for usage. The advantages of the methodology are discipline provided by the procedural phase structure, current phase of the development team easily identifiable by vendor and client, and provides efficient knowledge transfer between team members. (Melonfire, 2008) Furthermore, the associated disadvantages of the methodology are the phases are not flexible to change, developers cannot return to a previous phase, and originally develop designs are not feasible. Finally, the trait of not being flexible deems Waterfall appropriate for well-defined projects, and projects with a fixed-price, a fixed-timeline, and a none adjustable scope. (Base36,
Given the time, it takes to develop large sophisticated software systems it not possible to define the problem and build the solution in a single step. Requirements will often change throughout a projects development, due to architectural constraints, customer’s needs or a greater understanding of the original problem. Iteration allows greater understanding of a project through successive refinements and addresses a projects highest risk items at every stage of its lifecycle. Ideally each iteration ends up with an executable release – this helps reduce a projects risk profile, allows greater customer feedback and help developers stay focused.
It follows rapid changes with low cost in the system development cycle and aims to turn minimum requirements into productive deliverables. Agile emphasizes adjustability and adaptability in software development. In IT industry, agile methodology has been widely used for its incremental and iterative approach.
In this article on Design and implementation of quality control loops, the author identify the need to implement a rapid and flexible response to solve internal and external variabilities in business systems using quality control loops. The authors point out the need to align the process in alignment with the International standard EN ISO 9000:2005. In this process the authors approach is to enforce controlled quality through means of closing the gap in customer demands, defining managerial targets and understanding and maximizing the abilities of the company. Understanding the framework is key to mapping out the process and solving internal and external quality issues.
Waterfall is a linear process model that follows a sequential path from requirements analysis, design, implementation, testing and delivering the product (Royce, 2005, p30). It is characterised by being a document heavy and predictable. Because of the predictability it’s strengths are when a project has concrete requirements from the beginning that are extremely unlikely to change (Boehm, 1988). Being extremely well documented, the entire process is transparent and if one was to look through the documentation all relevant information would be available such as current progress so far and expected completion dates for the entire project. However with an emphasis on documentation, not all information recorded may be pertinent and finding the
Incremental method is one of the software development methodologies used by many organizations in Sri Lanka as well as in foreign countries. Many organizations adopted the incremental development method to develop their products and services in an effective and efficient manner. The incremental development method has a long procedure. It adds values to the software development process and finally builds up a strong software development which helps to satisfy the requirements of customers. The incremental development model is an evolution of the waterfall model which is a software development methodology incrementally adopted using prototyping. With incremental software development the company’s
Before 1990s, waterfall is a common software development but it has its own problems such as it assumes that all project requirements can be gathered at the beginning of the project. It like mission impossible, because during development process there are many outside and inside problem influences to the project such as customer want to change some of the product function or developer quit project. Therefore, agile software development is birth to improve problem from earlier software development.
Team approach shrinks a large complex issue or opportunity into several smaller parts where it can be solved in parallel. Once fall fragments into individual tasks, and are appointed for individuals to carry out assigned tasks, but where are the systems in place to keep track of the work done by the members of the team mode. This approach will allow the project manager to focus on the project as a whole and ensure that all tasks are being integrated
The paper focuses on the key components of agile teams and does not focus on non-agile teams even though a specific team has its own definite team characteristics. Thus, additional research may be needed to understand exactly what are the specific components of agile teams that make them truly agile. The paper focuses only on literature review and actual data may be needed for arriving at an appropriate conclusion and outcome apart from further research in this area. As part of the changed global scenario, many of the software development activities happen across various time zones and in various countries. This may also impact the software development activities. The paper does not focus on this aspect fully and more data is needed to understand the characteristics of agile teams that may need to be preserved during distributed or global software development (GSD). The framework highlights the key areas that need to be focused when agile teams are set up in an organization. The framework also focuses on how to make sure that the teams are set up for success. However, the areas highlighted are not exhaustive and detailed research may be needed to