Agile development vs Waterfall the side by side comparison of the models
2. Explain the difference between the traditional Waterfall model and the
Agile model.Agile|Waterfall —|— It is a continuous iteration lifecycle model used for developing and testingsoftware|It is a linear sequential lifecycle model for developing and testing software It is a flexible method to build a software|It is a rigid and structured method for software development It is highly collaborative, thus yielding quality output|It follows a rigid sequence of steps, hence team collaboration is difficult The process of development is divided into sprints|The process is broken down into several phases Changes can be made even after the initial planning is completed|Once the project development has started, development requirements cannot bechanged Development is a collection of many projects|Development is completed as a simple project or deliverable Testing is performed in the same iteration|The testing phase follows the build phase
The agile process involves the consideration and creation of a working productin an iteration, which is a part of the final product. Each successiveiteration is one step further towards the final product. This continues untilall product functionalities are satisfied.ÂOrganizations and users use the working product and provide feedback thatâsincorporated into the next iteration. With this, product roadmaps can bebuilt, produced, and tested before the next iteration.This is one of the most common and important Agile Interview Questions thateveryone should know the answers to.
Agile methodology vs Waterfall model
In this article, we determine the main features of two well-known projectmanagement methodologies and the difference between Agile and Waterfallmodels. It should be easy to define strengths and weaknesses of each methodusing friendly project scheduling software with Gantt charts.If you have only a general and superficial opinion about these methodologies,you can find out all the details, studying the main advantages of Agileproject management methodology and the features of Waterfall methodology.If recall briefly:Waterfall project methodology is a model in which every stage of a product’slife cycle takes place in sequence. The progress flows steadily downwardsthrough these phases like a waterfall.Agile software development methodology is the model that proposes asequential, linear and iterative approach.
Agile development vs Waterfall: the side-by-side comparison of the models
1. In Waterfall model software development, the process is divided into different phases. Agile proposes to segregate the development lifecycle into sprints. 2. In Waterfall, development process should be implemented as one single project. Then this project is divided into phases. Agile contains a set of different projects that are the iterations of the different stages. They are focused on improving the quality and feedbacks from users. 3. Waterfall software development model is structured and often rigid. Often project managers prefer Agile as a more flexible model. 4. According to the iterative Waterfall model in software engineering, all the project phases are completed at a time. In Agile they follow an iterative development approach. So some of the phases can appear more than once. 5. There is no chance to change the requirements once the Waterfall project development starts. Agile is more flexible and allows changes in the project development requirements. Even after the planning has been completed. 6. One more difference between Waterfall and Agile is their individual approach towards testing and quality. According to Agile, testing is usually performed concurrently with programming. In Waterfall, testing phase comes after the build phase. 7. Waterfall approach does not require the participation of customers, as it is an internal process. However, Agile methodology focuses on clients satisfaction and involves them to participate throughout the development phase. 8. Waterfall iterative model is good for projects with clearly defined requirements and without expected changes. Agile allows changing and evolving the requirements.Learn more about Waterfall and Agile differences and challenges here:
How to use Gantt Charts in choosing between Waterfall and Agile?
Project managers say that it’s better to visualize every project’s stage. AGantt chart is the most convenient way to do it.GanttPRO solutions offer to use helpful Gantt charts that can visualize everyproject and help to choose between Agile and Waterfall methodologies for yourproject. You can try to apply the charts for any project, not only forsoftware development.Once you’ve decided which method to utilize, you can further refine theprocess to best fit your project objectives.What are your thoughts about “Waterfall vs Agile” topic? Do you know anyspecial benefits of Waterfall and Agile methodologies? Feel free to sharethem!Major Advantages and Disadvantages of Agile MethodologySoftware development has always been big business ever since its inception.Even as more ready to be software is on the rise, large enterprises and evensome small and medium businesses still continue to hire software developersfor custom made software. Because only custom made software gives you theproprietary free to make changes whenever required and is made to suit yourrequirements.Traditionally, custom made software was developed using the Waterfallmethodology. Waterfall, as the name suggests is a linear software developmentmethod where each step of development is completed sequentially. This gaverise to the demand for a method where changes could be made regularly duringthe development and also during maintenance.The difficulties in Waterfall gave rise Agile methodology. Agile allowssynchronized software development where different stages of the project arecarried out simultaneously. This allows iterations to be made while usingAgile technology. There are many advantages of Agile methodology compared toWaterfall. Here are some of the most important aspects.
More robust final product:
In waterfall methodology, even with manual and automated testing, there aremore chances for bugs to go undetected till the software reaches in the enduser. With Agile Scrum however, feedback and iterations are an on-goingprocess which allows more bugs to be fixed before the final product reachesthe market. Thus, using agile methodology developers are able to deliver amuch more robust and error free final product.
Agile VS Waterfall
Comparing with waterfall method, be agile is more flexible and faster. Itencourages iterative and incremental design and development, which worksbetter in today’s fast-paced environment in the tech industry.Waterfall VS Agile
The advantage of agile development
Cross-functional team: It provides the opportunity to work closely with across-functional team.Empowerment: The team members contribute ideas, estimate the effort involvedand are responsible together for the delivery of the product.Transparency and Visibility: The stand-ups and sprint reviews improve thetransparency of the design and development process. It provides a richer andmore rewarding experience for all the team members to build great softwareproduct together.Faster communication: The communication process is more efficient thantraditional waterfall process. In the agile team, designers are able to workclosely with developers and product owners. It reduced the communication timebetween different people as face to face communication is always moreefficient than remote meeting or emails. Designers and developers can quicklydiscuss any design or technical issues on a daily basis.Flexibility and adaptability: It promotes adaptive planning, and allows you toquickly make any changes while building the product.
The disadvantage of agile development
Things can be vague: It is hard to predict, from timelines to budgets. Thereis no concrete plan, things remain a bit vague.Not enough time to design: In the agile environment, there is usually notenough time for designers. Designers work with short deadlines and not enoughtime to think about the design challenges.Difficult for remote collaboration: It won’t work well if you have team memberwork remotely. It is really hard to collaborate with people who are not co-located with others in the agile team. Remote work needs online meetings.However, online meetings usually have issues with technologies such as badinternet connection, background noise in the meeting etc. It costs more timethan just a quick face to face chat.Hard for new joiner: As there is less documentation or no documentation inagile development, it takes more time for new joiners to understand theproject and to quickly start working on design challenges. Especially when itcomes to specific products such as medical products, accountant products andinvestment trading products.
Suggestions for designers working on agile projects
The agile model adopts iterative development, and each iteration is designedto be small and manageable that can be delivered in a specific short period oftime. i.e., a week or a couple of weeks.An agile model is a group of development processes, and its main motive is toremove/avoid activities that may not be required for the project and to removeanything which is a waste of time and effort.Agile gives us an idea about how much of our delivered product is valuable andwhether we’ve missed out onto something that counts.Agile is a framework that defines how software development needs to be done.It’s not a single or specific method, and it is the collection of variousmethodologies and best practices that follow the value statement signed withthe customer.
Agile Vs. Waterfall Model
Waterfall Challenges: In the waterfall model, we follow the below steps forsoftware development:- * Requirement * Design * Implementation * VerificationIn this model, “Cost of change” is on the higher side which leaves the clientwith only two options:-Accept the high cost of changes OR Accept substandard software This model also has the following drawbacks- * Poor Quality: In the waterfall model when the project starts running out of time and money, the organization is forced to cut costs and time on testing which in turn leads to poor quality delivery. * Poor Visibility: Since the working project is not getting produced until the final product, so you never really know where you are on a waterfall project. Hence, the last 20% of the project seems to take 80% of the time. * Risky: It’s very risky because you don’t get to test your design until late in the project. Secondly, as long as it’s not tested, you don’t know if you are building the right product. Lastly, if any changes are required after testing it, then you have to start from the very initial stage of the product risking the time commitment as well. * Change: In this model, if you have to adopt any changes then you have to start from the initial stages. It does not only lead to high cost but delays in delivery as well.Agile Approach: Agile has the same stages of software development, but thisprocess is more agile. It follows continuous activities which makes it sharpand flexible. * Better Quality: In the Agile method, testing starts from the first stage, i.e., day 1 and allows us to deliver better quality. * Excellent Visibility: Visibility improves as every week you are delivering values to the business which means when you have built half the features you are halfway through the project. * Less Risky: It is less risky because you are getting feedback after every test and you can include those changes in the next stage. * Changes are easy: Since this is a continuous method you can make changes at any stage without investing extra money, in turn, making customers happy.