A Comproach And Agile Approach To Software Engineering

Looking at each methodology from a different perspective, the management perspective, unveils additional benefits and setbacks. The rigidity of the Waterfall method for software development can be cumbersome when dealing with changing expectations, but it makes it easier for management to manage the project’s progression. Having clear goals makes it easy for managers to track the development process. It is more difficult to track a project where requirements are constantly evolving. Most of the projects (not involving software development) in our department are tracked through their process. As goals are achieved, completion nears 100%.

Software development is a field where developers thrive to provide products faster, better and very inexpensive methods. “Agile Development” term used for several iterative and incremental software development methodologies. Each agile method is unique in its approach, they all impart a typical vision and core attributes. As matter of fact all the methods are fundamentally incorporate with each other and having a review system provides successive ways to enhance, refine and deliver a software system. The below figure represents the steps followed in agile development

The Waterfall or Traditional model is a linear or Sequential approach to develop a Product. In this methodology, each phase of the product’s life cycle takes place in sequence of events like : Requirement gathering ,Design ,Developing ,System Testing ,User Acceptance Testing(UAT),Fixing the issues and delivering the finished product whereas Agile is an iterative and team based approach to develop a product. In agile methodology, Instead of developing the product with all the features at once we divide the project into the smaller segments called sprints and incorporate new features in each iterations or sprints. Instead of extensive planning and design up front, agile methodologies allow changing requirements over time by using the cross functional teams who work on successive iterations to develop a product. In this model, the goal of each iterative

Agile Project Management reduces intricacy by breaking down the many-months-long cycle of building requisites for the entire project, building the product and then testing to find hundreds of product imperfections. Instead diminutive, utilizable segments of the

+ [3]or [4] However, as said in the agile manifesto definition “fewer people are needed if a lighter methodology is used” so a small team of self-organised developers can produce a full software product in the same time that a large team would take to produce a system under traditional methodologies.

Today’s world market is much faster. Every industry is now become the result orientated. They need results in quick time. Like any other industry IT industries also force to make the changes in concepts and techniques they were using traditionally. The traditional models like waterfall, Incremental model, RAID model are not useful for most of the current project requirement. Nowadays project requirements depend on many other unstable concepts, which make the project less predictable. Because of these entire unpredictable project, agile becomes the first choice of most of the clients. The agile software development methods are more adaptive approach, while conventional/traditional software development methods are predictive approach. In traditional method all the project development plan is created before starting the actual development. Once the designing is completed we can’t make changes. On the other hand an agile methodology has the provision to acquire such changes even after the coding is started. Agile relies more on the incremental, iterative development cycles. Agile methodology software is developed in the small periods. Agile is for the projects whose requirements are not fully discovered, projects where output is not predictable. This makes the agile methodology more suitable for the current market situation.

In conclusion, agile software development is a very exciting and useful approach, although some project suit agile more than others. The collaboration and visibility can provide a much better and rewarding experience for the team to develop software products. Over the last years, many companies dramatically improved their performances

“The waterfall model is a sequential design process, used in software development processes, in which progress is seen as flowing steadily downwards (like a waterfall) through the phases of conception, initiation, analysis, design, construction,

When developing a software product there are two different project management approaches that can be taken: waterfall or agile. Both waterfall and agile have their advantages and disadvantages but agile has become the more popular of the two, due to its ease of change during the devolvement process.

The waterfall approach to software development projects is a linear model, which focuses on individual stages of development including, requirement identification, analysis, design, coding, testing and operations. While this model has been around for decades, there are many drawbacks. This method heavily focuses on extensive documentation and front loaded requirements gathering; thus inviting the opportunity for significant and costly failures. As the landscape of information technology in the business world has evolved, we have seen a major shift from complex back end systems that didn’t include input from stakeholders and only programmers could understand, to computer programs that are customized to the front end users and other

Agility means the ability to move quickly and easily. “Agile” is a collective term for methodologies and practices that evolved in recent years to increase the relevance, quality, flexibility and business value of software solutions. These adaptive management approaches are specifically intended to address the problems that have historically plagued software development and service delivery activities in the IT industry – including budget overruns, missed deadlines, low-quality outputs, and dissatisfied users. It is an iterative approach to software development that builds software incrementally from the start of the project, unlike waterfall approach of trying to deliver it all at once near the end. It works by breaking projects down into little bits of user functionality called user stories prioritizing them, and then continuously delivering them in short cycles called iterations. It promotes adaptive planning, progressive development, early delivery, continuous improvement, and encourages rapid and flexible response to change. The concept of agile working has been adopted by many organizations, which have realized that lengthy decision-making processes are no longer fit for purpose in a world of complex and continuous change. Agile development provides opportunities to assess the direction throughout the development lifecycle. The paradigm shift and failure of waterfall model in large size projects, led to the evolution of new evolutionary methods including agile software

There are many reasons that lead to fail of agile software projects such as weak project planning, scanty communication between teams and customers, lack of alteration, monetary management, and quality management, ineffectual participation of implement management, lack of qualified team members, ability to adapt, and using wrong methodology and tools [10].

Agile methodologies have a range of benefits and limitations and it is up to companies to decide if it is worth the cost to implement an agile approach. The main limitations of agile are that it can be seen as undisciplined, testing may not be done properly which can miss design flaws before delivery and continuous requirement changes can lead to high costs and overhead. On the

Waterfall model is based on sequential process that is used in software development process. It takes place in steps. It is called as waterfall because it moves step by step in downward direction. As seen in manufacturing and construction site, each process is well structured and carried out step by step, in software development Waterfall model carries out all phases in sequential manner. All the phases like Conception, Initiation, Analysis, Design, Construction, Testing, Implementation and Maintenance are carried out in a sequential manner, step wise. It is stated that the first formal description of Waterfall model was made in 1970 in the article written by Winston W. Royce. Though the first use of waterfall model was made in 1976 in the article written by Bell and Thayer.

Agile software development is a collection of software development methods where requirements and solutions evolve through collaboration among self-organizing and cross-functional teams. It promotes flexible planning, progressive development,