A Detailed Review of Waterfall Methodology vs Agile Methodology
What are the Project Management Methodologies?
Methodologies provide frameworks to help you to organize your project’sinitiating, planning, executing, monitoring and closing processes. From thisaspect, there are lots of methodologies still in use in the world of projectmanagement. Some of them provide traditional solutions, some others providemore innovative frameworks. Waterfall, Agile, Lean, Extreme Programming, SixSigma are some of the most common ones. Although they have the same goal:carrying out the project to successful completion, their principles arevarious. We recommend you to read this article regarding the projectmanagement methodologies if you don’t know the key differences between them.In this article, we are going to focus on the two methodologies which areagile and waterfall.
Agile vs Waterfall – Limitations of Agile Methodology
* It can not be effective in smaller projects. * If the client is not clear about the final product, the project can easily go off track. * The Agile methodology requires a senior programmer to take important decisions during the meeting. * It is costly considering other methodologies.For better understanding the Agile vs Waterfall concept, let’s talk about theWaterfall Project Management Methodology.
What is the Waterfall Methodology?
Waterfall is a liner sequential model in which the project work is completedsequentially in each phases. This means the predecessor phase ends and thesuccessor phase starts just after. Waterfall is a straightforward methodologyfor project management which helps to perform progress measurement easily. Thetesting phase takes place at the end of the development. The client orstakeholders are not too much involved compared with the agile methodology.
Agile vs Waterfall – Advantages of Waterfall Methodology
* Each sequential phase has specific needs and deliverables. This makes easy to plan and manage. * It suits best to the projects with well-defined scope and requirements. * It suits best to the smaller projects. * It speeds up the deliveries of the project * Everything is well documented
The Agile methodology is a type of project management process that is mainlyused for software development, where requirements and solutions evolve throughthe collaborative effort of self-organizing and cross-functional teams andtheir customers. It is also gaining traction in other industries due to itsflexibility and adaptiveness, as well as its focus on collaboration,continuous improvement, and high quality results.Emerging from the values and principles of the Agile Manifesto, it was createdas a response to the shortfalls of the Waterfall method. Developers realizedthey needed something different to the linear, sequential approach of thetraditional Waterfall methodology in order to keep up with the improving andinnovative culture of the constantly-developing software industry.The Agile methodology principally is a mindset and a way of thinking ratherthan just a standard structure and process to follow in business. Agile usessix main deliverables to create the product and to track progress: 1. Product vision statement 2. Product roadmap 3. Product backlog 4. Release plan 5. Spring backlog 6. Software increment Agile also uses visual tools such as a Kanban board and a burndown chart tohelp with the progress tracking and to keep within deadlines.Agile project management uses frameworks to develop and deliver a product. Oneof the most popular frameworks is Scrum. Scrum is heavily attached to Agile,but it’s important to note that while Scrum is Agile, Agile is not Scrum. Theideas behind the Agile methodology are implemented by using Scrum which aimsto develop, deliver, and sustain complex products through collaboration,accountability, and iterative progress.Using this framework can influence a higher quality product as it encouragescollaborative decision-making and constructive feedback from customers.Agile projects encourage teamwork, self-organization, and accountability.Thus, Agile is an effective process for teams looking for an adaptableapproach to product development. Due to the approach’s focus on conductingfrequent inspection and adaptation cycles, Agile allows for rapid delivery ofhigh-quality projects. It also provides teams with a solution to handle thecommon issues of project management such as cost, scope, and schedule.Now, to aid you with your Agile vs Waterfall decision, here’s a list of prosand cons for you to peruse:
The Waterfall methodology is one of the more traditional project managementmethodologies. It is a linear, sequential design approach where progress flowsdownwards in one direction — like a waterfall. The methodology asserts thatmoving to the next phase of development can only happen after the currentphase has been completed, and each phase must occur in the following order: 1. System and software requirements 2. Analysis 3. Design 4. Coding 5. Testing 6. OperationsBy Peter Kemp / Paul Smith — Adapted from Paul Smith’s work at wikipedia, CCBY 3.0, https://commons.wikimedia.org/w/index.php?curid=10633070Waterfall is a process known for its stringent process structure that leaveslittle room for design changes in the early stages of development. The reasonfor this is because the methodology stemmed from the manufacturing andconstruction industries, wherein any changes made to its structured physicalenvironments would have resulted in exuberant costs. As an early attempt toprovide structure, guidance, and regulation to the development of large andcomplex application systems, problem-solving using the Waterfall methodologyimproved processes by having clearly defined structures in place.Another thing it is known for is its emphasis on documentation. Recordinginformation is strongly promoted within the Waterfall methodology and seen asa byproduct of the development process, rather than an afterthought. This isdue to the idea that human work should always be verified and be prepared forunexpected modification. For example, if a worker was to leave during thedevelopment process, their replacement can start where they left off byfamiliarizing themselves with the information provided through thedocumentation.Now to add the Waterfall pros and cons to the Agile vs Waterfall debate:
Waterfall model – Definition
Waterfall model with Royce’s iterative feedback^The concept of the waterfall model incorporates a step-wise/sequentialapproach to project development. The project’s progress flows progressivelydownward through all the phases, similar to a waterfall.According to a recent study by PMI, “51% of the organizations use waterfallmethodology.”The “waterfall model” is also known as the” traditional” approach to projectdevelopment and is known for taking things slow and steady. Each phase has tobe finalized before moving on to the subsequent one.On considering the waterfall methodology, you are aiming for a successfuloutcome as a result of meticulous planning at each phase in the process.Waterfall methodology mainly emphasis on accuracy.Here is a list of various steps involved in implementing/executing a projectusing a waterfall methodology.Requirement analysis is the initial phase in the waterfall model. Requirementsare thoroughly gathered at the initial phase of the project. You need to makethorough research and define the target market, set of specific guidelines,and customers. This phase serves as basis for further development and consumesup to 40% of the project time and budget.This phase involves how specifically the system requirements will betechnically implemented. The design phase is broken down into physical andlogical design sub-phases.The implementation phase involves the developer’s team to gather all therequirements from the previous steps and start developing the actual code.The testers try to come up with any issues with the product. If they happen tocome across any severe defects, it is advised to go back to previous steps tofind the root cause of the issue. Make a note of where actually improvementscan be made and ahead towards the final step.The maintenance phase not only includes just the deployment phase but alsosupports to keep the product functional and informed.This phase explains that every stage until here is on proper track now. Theproduct developed is ready to launch. Check for any errors before taking itlive.The mentioned-above phases follow a linear order, wherein each step can’t beinstigated further until the previous stage has been accomplished.
A Detailed Review of Waterfall Methodology vs Agile Methodology
When we talk about waterfall methodology vs agile, it is essential to notethat they are mature and useful. The use of a specific methodology comes downto the particular project and the organization carrying it out. In this post,you will learn much about waterfall vs agile pros and cons regarding systemdevelopment.
What is the Waterfall Methodology?
Waterfall is the older, more traditional method. Its roots lie in the 1950s,when software was in its infancy and was developed using methods similar tothose used to develop hardware. Most software at that time was developed forgovernment, and especially military purposes, and this method is still highlysuitable for bureaucratic, top-down organizational structures.Waterfall means a linear approach to development. Well, it’s a traditionalapproach that’s founded on strict planning and undertaking the planning bit bybit. When comparing waterfall methodology vs agile methodology, we cancomfortably say that the waterfall methodology is perfect for theorganizations with a hierarchical structure.Here is the sequence of events you need to follow if you plan to use thismethodology: * Gather and document all the needs. Upon commencement of the next work stages, all the tasks will be undertaken depending on this documentation. Here, the customer only takes part in the first and last stage of project performance. * The next step is the design stage. Here the system developers try to get a perfect form to meet all the consumer’s needs. * Coding and unit testing. The primary task of this stage involves coding and perform unit tests. * The next step involves testing the system and user acceptance. * Fixing issues. * The final step entails delivering the completed system to the client.Need Help With App Development?Our experts can help you in developing your next world class apps.The main difference when it comes to agile development vs waterfalldevelopment is that agile methodology has no strict structure when it comes todesigning software. Naturally, there’s no need for documentation in agilebecause the client can see the work’s progress at all times.Basically, agile methodology is more flexible than the waterfall. As a result,it satisfies the customers’ needs and end-users much better. That’s why agileis more helpful for most projects. Additionally, more and more softwaredevelopers are opting for the agile methodology.
Pros of Waterfall Methodology
Superb documentation – every phase of the process is precisely documented toeradicate any shortcuts or misunderstandings.Clear framework – before project commencement, the waterfall methodologyprovides a precise understanding of the project deliverables and timeline.Basically, the project’s full scope is agreed upon in advance by the customersand the development team.Hand-off approach – the technique creates room for a more hands-off approachfrom the client. After finalizing the initial project plan and design, there’sminimal demand for continuous client presence until the review phase.Shared load – the methodology doesn’t take the entire development team’sattention and time. Based on the phase, your development team can focus onother essential tasks within the company.
Cons of Waterfall Methodology
Remember, there is no single system without one or two defects. Here are thecons of waterfall methodology:Changes can be tricky – the fundamentals of the waterfall technique are thatit adheres to a set timeframe and precise steps. After setting these elements,it becomes tricky to undertake changes once the development personnel faces ahurdle. Adaptability is an essential part development team needs to considerbecause it can be difficult for clients to have an entire perception of thesystem before it starts.Little client involvement – a hands-off approach isn’t ideal for all systems.You’ll often come across consumers who need much more participation as theproject proceeds. Waterfall methodology may turn out to be a hindrance forboth parties if there’s no participation framework.Last-minute testing – another con of waterfall is that waterfall isn’t time-bound. Due to this, you may find that your projects may start running behindschedule. Since a lot of time is dedicated to the development phase, your teamwill always have a limited time when it comes to testing out the system.
Comparison- Agile vs waterfall methodology
Agile vs Waterfall comparison tableIn simple terms, agile means ‘the ability to move easily and quickly,’ andthat’s what you’ll get upon utilizing this development methodology. Agile is adevelopment methodology characterized by splitting activities into strict worksegments with regular reviews and plan adaptations.On the other hand, waterfall methodology is a linear sequential model wherethe progress primarily flows in a single direction. Generally, it flowsdownwards via different phases such as requirement collection, systemanalysis, system design, system development, system testing, systemdeployment, and system maintenance.There is a difference between agile and waterfall methodologies, as indicatedabove, but the two are perfect in their individual ways.To summarize this article, let us outline the difference between agile vswaterfall methodology in this section. * While the waterfall is ideal for projects with precise requirements where you don’t expect changes, agile, on the other hand, works best in projects where you’ll need constant requirement changes. * The waterfall is a sequential and easy to manage approach while agile is flexible and lets you undertake changes in all phases. * While it’s not possible to alter the project’s description in the waterfall, you can easily edit in agile. * In waterfall, you can’t edit project needs, and the business analyst defines them once at the start of the project. When it comes to agile, you can frequently change the project requirements.