Advantages of the Waterfall Model
How To Manage Agile Software Development Cycle Effectively
Managing a project can be challenging, especially when it’s something like afast-changing Agile SDLC.I mean, you have targets, team roles, goals, and a lot of fast-moving parts.Luckily, you don’t have to be a lightning-quick superhero to manage SDLCAgile.All you need is a powerful software like ClickUp, which makes managing theAgile lifecycle a walk in the park.Wait, what’s ClickUp?ClickUp is the world’s highest-rated Agile project management software.Used by 100,000+ teams in companies from startups to titans like Google, Nike,Airbnb, and Netflix, it can help you manage Agile or any other SDLC model.Whether you need help with: * Any methodology like Kanban, Agile Scrum, or Extreme Programming * Managing your product backlog or sprint backlog * Keeping track of your testing processes like bug testing or security testing * Any planning process, like sprint planning or resource planningClickUp has got you covered!Sounds great?Let’s take a look at how ClickUp can help you through the entire softwaredevelopment process:Goals are super important for every project.Without it, your project will be like a lost ship in the middle of the ocean.Just before starting the first iteration of the software lifecycle, you’llneed to set both long term and short term goals for your Agile project.Here’s what goals look like in the Agile methodology: * Optimize landing page design for maximum customer interaction * Add a timer feature to the landing page * Add a popup feature when the user goes to exit the webpageUsually, at every requirement analysis stage, you often get multiple goals totake care of.But how do you keep track of every goal?Keeping track of everything on a piece of paper is certainly not a good optionin 2020.Who knows what can happen to that sheet of paper?!Luckily, ClickUp’s Goals feature can help you out!Goals are high-level containers that can be broken down into smaller Targets,which can be easier to achieve. While this keeps everything organized, it alsomotivates your Agile or Scrum team by giving them a frequent feeling ofaccomplishment.Additionally, with every completed Target, ClickUp auto-updates your team’sprogress percentage in real-time. This way, everyone has a clear picture ofhow close they are to achieving the goal.Using ClickUp’s Goals, you can also: * Quantify your Agile Goals with OKRs (Objectives and Key Results) * Create weekly scorecards for better performance appraisal * Track Scrum sprints or any project in real-time
Waterfall And Agile Model Workflows
In simple English, Agile means ‘able to move quickly and easily’ and hencethat is what it means when it comes to the Agile development methodology.Agile is a method of project management that is represented by splitting thetasks into shorter segments of work with frequent reviews and adaptation ofplans.Similarly, the word waterfall denotes a vertical flow of water or the flow ofwater through a series of steep drops. The waterfall model is a linearsequential model in which the progress flows majorly in one directiondownwards through the phases of requirement gathering, analysis, design,development, testing, deployment, and maintenance.This same illustration applies to the concept of project management when itcomes to the waterfall model. It is a method of project management that isrepresented by serial stages and a fixed plan of work.[image source]Before discussing the Waterfall workflow and Agile workflow, let us have alook into the Software Development Life Cycle definition and its requirements.
1) Waterfall Model
As discussed earlier, the waterfall model is the first introduced softwaredevelopment life cycle. It is the sequential way of developing software. Veryfew companies follow this approach. When the project is very simple and thereare no further requirements changes, we will follow this approach.We will discuss more on the waterfall model in this tutorial.
In the Waterfall model, each phase should be completed before starting anotherphase. We cannot operate multiple phases at the same time. This was introducedin 1970 by Winston Royce. The Waterfall model is divided into differentphases.[image source]Waterfall Model includes the following phases: 1. Requirement collection 2. Feasibility study 3. Design 4. Coding 5. Testing 6. Maintenance
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.
The Waterfall Model
The Waterfall methodology is the most popular version of the SystemDevelopment Life Cycle for software engineering and any project involving theInformation Technology field. This methodology is known to follow a sequentialand linear process. Sometimes, the planning of the waterfall methodology isdone with the help of a Gantt chart. This type of bar chart shows the startand end dates for each task. They generally consist of eight stages, and onceone of the eight stages is complete, the development team moves into the nextstep. In the waterfall methodology, the team cannot go back to a previousstage without starting the whole process from the beginning. The team alsoneeds approval and feedback on the requirements of the customer to move to thenext step.Peter Kemp / Paul Smith / CC BY
Advantages of the Waterfall Model
Developers take help for the waterfall methodology for simple, unchangingprojects. The linear and rigid nature of the model makes it easy to use andallows for in-depth documentation.The advantages of waterfall methodology includeEasy to use and manage: Since the waterfall model follows the same sequentialpattern for all the projects, it is easy to use and understand. The developingteam does not need any prior knowledge or training before working on thewaterfall model. The rigidity of the model and the need to take reviews fromcustomers before moving onto the next step makes it easy to manage andcontrol.Discipline is enforced: The team can reduce the risk of missing a deadline byfocusing on requirements and design before writing the code of the software.Every phase in the waterfall has an initial and final point, and hence itmakes it easy to share the progress of the project to the management team, thestakeholders, and the customers.Encourages a well-documented approach: There is a need for documentation atevery phase in waterfall methodology, which results in a better understandingof the logic behind the codes and tests being used. It further leaves a papertrail for any upcoming projects, or its stakeholders need to see more detailabout a specific phase.
Difference between Agile Model and Waterfall Model
Agile Model | Waterfall Model —|— The agile method proposes an iterative approach to software design | Thedevelopment of the software flows sequentially from the start point to theendpoint. Generally, the developers break the agile process into individual models thatdesigners work on | The developers do not break the design process intoindividual small models. The customer has early as well as frequent chances to look at the product andmake a decision and changes in the project. | The customer can merely see theproduct at the conclusion of the project. Experts consider the agile model to be unstructured as compared to thewaterfall model. | The waterfall model is more protected because they are verymuch plan oriented. The team can implement small projects quickly. For large projects, it iscomplicated to estimate development time. | The team can estimate alldimensions of the project and complete them. Developers can fix the error can in the middle of the project. | Only at theend, the developers test the whole product. If they find any requirement erroror any required changes, the project has to start from the beginning. The development process is iterative, and the given project is executed inshort (2-4) weeks iterations. Planning is considerably less. | The developmentprocess is phased, and, at the same time, the phase is much bigger than theiteration. Every step ends with a detailed description of the next step. Documentation gets less priority than software development. | Documentation isalways a top priority, and the team can even use the documentation fortraining staff and improve the software with another team Every iteration has its testing phase. It allows implementing failure testingevery time the developer’s team releases the latest functions or logic. | Theteam executes the testing only after the development phase because individualparts are not fully functional. In agile testing, when an iteration ends, shippable features of the productare delivered to the customer. New features are usable right after theconsignment. It is practical when you have a good relationship with customers.| All the features developed by the team are delivered at once after the longexecution step. Testers and developers work collectively | Testers and don’t work together At the end of every sprint, the Developer team has to take user approval. |The developer team takes user approval at the end of the development. It needs close communication with developers and together examinesrequirements and planning. | The developer does not engage in the requirementand planning process—usually, time delays between tests and coding. I hope you find this guide useful. If so, do share it with others who areexcited to explore Software Engineering and other topics that we publish hereon our blog. If you have any questions related to this article, feel free toask us in the comments section.Why agile methodology is the best alternate to waterfall methodologyChoosing the right project management methodology is crucial for the successof a project. But when you have so many planning methodologies to choose from,how do you know which one will yield better results? At Asahi Technologies,staying true to our values, we keep you – our clients – informed about thepros and cons of using different project management methodologies, to help youdecide. Today, the methods that will be scrutinized in detail are agilesoftware methodology and waterfall methodology – the two much-talked-aboutapproaches in software development. Let’s understand each of thesemethodologies better and evaluate which one is a better choice, when it comesto delivering superior software products.
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:
Software Development Life Cycle: Why Go Agile
There’s no doubt about it: agile is a powerful and efficient method forsoftware development. It does not simply offer benefits to the developmentteam but also has business advantages to the client.With the agile software development life cycle model, teams can easily handlemany of the typical project pitfalls involving costs, scope, and conflictingschedules in a more controlled way.By organizing and reinventing activities related to custom softwaredevelopment, agile achieves its many objectives in a leaner, more efficient,and more business-focused manner.What is Agile Project Management?
Popular agile methodologies used in agile software development
There are many agile methodologies practiced in project management like * Extreme Programming (XP) * SCRUM * Test-Driven Development (TDD) * Feature-Driven Development (FDD) * Lean Development (LD) * Adaptive Software Development (ASD) * Agile Modelling (AM) * Crystal Family Group (Clear, Red, Orange, Yellow) * Internet Speed Development (ISD) * Disciplined Agile Delivery (DAD) * Agile Software Process Development * DevOps * Kanban * Dynamic Systems Development Method (DSDM).> Must Read: Top 25 Agile Interview Questions with Detailed AnswersAgile development model contains its own pros and cons based on the agilemethodology selected for the project. However, in any agile softwaredevelopment, it follows iteration which ensures continuous delivery.Let’s look at some of the popular agile methodologies and their overview:Brainstormed by 17 software programming professionals in February of 2001, theagile manifesto was developed for effectively build software. The manifesto isnothing but the agreed thoughts of the leaders which focuses on four values: * Individuals and interactions over processes and tools * Working software over comprehensive documentation * Customer collaboration over contract negotiation * Responding to change over following a planAlong with that agile software development which is supposed to implementagile manifesto must follow twelve manifesto principles and these are: 1. Customer satisfaction through early and continuous software delivery 2. Accommodating changing requirements throughout the development process 3. Frequent delivery of working software components 4. Collaboration between the stakeholders and developers throughout the project 5. Motivate, support and trust the people involved in the project 6. Enable face-to-face interactions 7. Considering working software as the primary measure of progress 8. Agile processes for supporting a consistent development pace 9. Attention towards technical design and detail to enhance the agility 10. Simplicity 11. Self-organizing and motivated teams encourage great requirements, architectures, and designs 12. Focus on how to become more effective on a regular basis.> Also Read: How to build a career in Agile?Extreme Programming follows an agile software development model thatemphasizes on a high level of involvement between the development team and thecustomer. The customer makes the user stories and prioritizes them for thedevelopment. Then the development team follows the continuous iterative modelto deliver the user stories. Each iteration involves planning, programming,testing, and continuous collaboration. Furthermore, each iteration cycletypically takes 1 to 3 weeks.This is an aggressive agile development model that ensures fast delivery.However, it is among highly disciplined agile methodologies which needextremely skilled project associates.This is the mostly used agile methodologies in agile software development. Inthis method, the product owner prioritizes the iterative work based on system-wide functionality which is known as “product backlog.” In SCRUM, theiteration is known as a sprint, and it generally lasts up to 30 days.In this agile development model, the scope creep is well controlled becauseonce the sprint is committed and further development functionality is notentertained in that sprint. After every sprint the product backlog is analyzedand, they are reprioritized for the next cycle.> Try Now: Professional Scrum Master PSM I Free Exam Simulator