Author Topic: Agile Vs Waterfall Method  (Read 985 times)

1190763804

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Agile Vs Waterfall Method
« on: August 27, 2019, 07:26:18 pm »
Differentiate the Agile Process and Waterfall Methodology? Based on what situations, Companies will use which Process?

Aruna

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Re: Agile Vs Waterfall Method
« Reply #1 on: March 23, 2021, 09:05:33 pm »
Waterfall Model usually followed in the sequential order. If the previous step completed successfully then development team only moves to next phase of development or testing in the given project.
In the software development process agile methodology helps continuous iteration of development and testing. In agile methodology, development and testing activities are concurrent.
Waterfall Model is very useful for small projects.
agile method used for the large projects

ARASAVILLI DEEPAK

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Re: Agile Vs Waterfall Method
« Reply #2 on: April 10, 2021, 03:59:51 pm »
Differentiate the Agile Process and Waterfall Methodology? Based on what situations, Companies will use which Process?
  • Comparatively Agile methodology has less disadvantages than waterfall methodology.
  • Only when the requirements are well understood waterfall can be used but agile can be used even when the requirements are not clear.
  • When there is a change request at the final stage of the project in waterfall methodology there are high chances that the project will fail, but in agile process, as they work along with the client there are very less chances that the project will fail.
  • Documentation is not required for agile methodology, where as in waterfall documents are required for each and every stage of the process.

The companies choose these methodologies based on the requirements and size of the project.
The most commonly used methodology is agile as it has less chances for a project to fail.

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Re: Agile Vs Waterfall Method
« Reply #3 on: April 11, 2021, 11:38:42 am »
Differentiate the Agile Process and Waterfall Methodology? Based on what situations, Companies will use which Process?
Waterfall model is a traditional process and in this process, the project is executed step by step.
Once the project is confirmed
  • Requirements gathering and documentation phase
  • Design Phase
  • Development Phase
  • Testing Phase

Once the above 4 steps are completed is when the client can have a look at the system. If the above process takes more time then the system will become obsolete soon in this never ending innovations and we have to start the process again for making the changes which is a great drawback for doing the project using Waterfall model.

Alternatively agile solves the above problem, where the project is implemented in modules where all the steps mentioned above will be executed consistently, the timeline is small and any changes can be accommodated then and there using a change request process.

Hence companies decide between Waterfall and Agile based on the size of the project and the time required to complete the project.

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Re: Agile Vs Waterfall Method
« Reply #4 on: May 03, 2021, 09:53:24 pm »
Waterfall Model methodology which is also known as Liner Sequential Life Cycle Model. Waterfall Model followed in the sequential order, and so project development team only moves to next phase of development or testing if the previous step completed successfully.

Agile methodology is a practice that helps continuous iteration of development and testing in the software development process. In this model, development and testing activities are concurrent, unlike the Waterfall model. This process allows more communication between customers, developers, managers, and testers.


1) Waterfall is a Liner Sequential Life Cycle Model whereas Agile is a continuous iteration of development and testing in the software development process.

2) Agile methodology is known for its flexibility whereas Waterfall is a structured software development methodology.

3) Agile which follows an incremental approach whereas the Waterfall is a sequential design process.

4) Agile performs testing concurrently with software development whereas in Waterfall methodology testing comes after the ?Build? phase.

5) Agile allows changes in project development requirement whereas Waterfall has no scope of changing the requirements once the project development
    starts.

1202147611

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Re: Agile Vs Waterfall Method
« Reply #5 on: May 05, 2021, 05:53:47 pm »
Both the Agile and Waterfall methodologies can help an improvement group produce excellent programming. Contingent upon the particular undertaking necessity, knowing the distinction among agile and waterfall can more readily prepare a group to pick the correct cycle and techniques in conveying an effective programming project. A portion of the unmistakable contrasts are:

?   Agile is a steady and iterative methodology; Waterfall is a straight and consecutive methodology.
?   Agile isolates a task into runs; Waterfall separates a venture into stages.
?   Agile finishes numerous little activities; Waterfall finishes one single task.
?   Agile presents an item mentality with an attention on consumer loyalty; Waterfall presents an undertaking attitude with an emphasis on effective task conveyance.
?   Requirements are readied ordinarily in Agile, while prerequisites are arranged once toward the beginning in Waterfall.
?   Agile permits requirement changes whenever; Waterfall evades scope changes once the task begins.
?   Testing is performed simultaneously with improvement in Agile; testing stage comes solely after the form stage in Waterfall.
?   Test groups in Agile can partake in necessities change; test groups in Waterfall don't engage in prerequisites change

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Re: Agile Vs Waterfall Method
« Reply #6 on: May 28, 2021, 06:16:58 pm »
Agile Vs Waterfall Method

-    Waterfall is a Liner Sequential Life Cycle Model whereas Agile is a continuous iteration of development and testing in the software
     development process.
-    In Agile vs Waterfall difference, the Agile methodology is known for its flexibility whereas Waterfall is a structured software
     development methodology.
-    Comparing the Waterfall methodology vs Agile which follows an incremental approach whereas the Waterfall is a sequential design
      process.
-     Agile performs testing concurrently with software development whereas in Waterfall methodology testing comes after the ?Build?
      phase.
-     Agile allows changes in project development requirement whereas Waterfall has no scope of changing the requirements once the
      project development starts.

When to Use Waterfall Method for Project Management?

Deciding between Waterfall and Agile comes down to examining the characteristics of the project and the needs of the customer. In particular, pay close attention to the requirements, the goal, and the objective of the project. Waterfall is often a better choice when:

-    The requirements are well understood and not likely to change.
-    The customer is not prone to demanding changes.
-    The customer prefers not to be involved in the development, but wants to be consulted at the beginning and receive a working
      package at the end of the project.
-    The project is small.
-    Speed of delivery is not important.
-    The delivery is to be applied to a legacy system that is not prone to change.
-    You will have similar projects in the future, allowing reuse of the project plan and can glean lessons from the heavy documentation
      of the previous project.

Vibha Singh

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Re: Agile Vs Waterfall Method
« Reply #7 on: May 29, 2021, 03:27:08 pm »
Waterfall Model is a sequential model. It is also known as Linear sequential Life cycle model. Waterfall Model followed in the sequential order, and so project development team only moves to next phase of development or testing if the previous step completed successfully.

Agile methodology is a practice that helps continuous iteration of development and testing in the software development process. In this model, development and testing activities are concurrent, unlike the Waterfall model. This process allows more communication between customers, developers, managers, and testers.

The Agile methodology is known for its flexibility whereas Waterfall is a structured software development methodology.

Agile performs testing concurrently with software development whereas in Waterfall methodology testing comes after the ?Build? phase.

Agile is quite a flexible method which allows changes to be made in the project development requirements even if the initial planning has been completed. In waterfall model, there is no scope of changing the requirements once the project development starts.

The Agile Team members are interchangeable, as a result, they work faster. There is also no need for project managers because the projects are managed by the entire team. In the waterfall method, the process is always straightforward so, project manager plays an essential role during every stage of SDLC.

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Re: Agile Vs Waterfall Method
« Reply #8 on: July 14, 2021, 09:44:07 am »
Agile Method:
Agile methodology is a practice that helps continuous iteration of development and testing in the software development process. In this model, development and testing activities are concurrent, unlike the Waterfall model. This process allows more communication between customers, developers, managers, and testers.
Waterfall Method:
Waterfall Model methodology which is also known as Liner Sequential Life Cycle Model. Waterfall Model followed in the sequential order, and so project development team only moves to next phase of development or testing if the previous step completed successfully.
Difference between Agile and waterfall Method:
1. Waterfall is a Liner Sequential Life Cycle Model whereas Agile is a continuous iteration of development and testing in the software development process.
2. In Agile vs Waterfall difference, the Agile methodology is known for its flexibility whereas Waterfall is a structured software development methodology.
3. Comparing the Waterfall methodology vs Agile which follows an incremental approach whereas the Waterfall is a sequential design process.
4. Agile performs testing concurrently with software development whereas in Waterfall methodology testing comes after the ?Build? phase.
5. Agile allows changes in project development requirement whereas Waterfall has no scope of changing the requirements once the project development starts.

1212282002

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Re: Agile Vs Waterfall Method
« Reply #9 on: July 29, 2021, 12:00:07 pm »
Agile and waterfall are two distinctive methodologies of processes to complete projects.
Agile is an iterative methodology that incorporates a cyclic and collaborative process. In the agile methodology, the project will go through a series of cycles throughout the lifetime of the project. The development phase, review, feedback, and then approval of the work item ? either yes or no. If yes, implement and complete the task. If no, record and make necessary changes, track and adjust the backlog or prioritize to reflect the newly acquired knowledge, and then move onto the next task or sprint.
Waterfall is a sequential methodology that can also be collaborative, but tasks are generally handled in a more linear process. The waterfall methodology is a simpler process of moving tasks through the phases of defining requirements, designing the implementation, implementing the work item and maintenance of the feature in the end.

1212778202

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Re: Agile Vs Waterfall Method
« Reply #10 on: August 29, 2021, 11:53:24 pm »
Agile is flexible in accommodating the change management. Whereas, waterfall has lot of implication when the change management has been induced in the project. Waterfall method is more sequential in approach and time consuming. Projects that are more conventional and do not major changes and are less flexible can adopt the waterfall method. However, the projects that are more dynamic and flexible adopts Agile.

Projects that are dynamic and prone to lot of changes in the course of time with respect to the requirement adopt the waterfall method then there is every chance the deadline gets extended and deliverables being effected as the accommodating the continuous changes is a challenge in the waterfall method.

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Re: Agile Vs Waterfall Method
« Reply #11 on: September 06, 2021, 03:14:41 pm »
1)Agile is an increamental and iterative approach, Waterfall is a linear and sequential approach
2)Agile seperates a project into sprints,Waterfall divides a project into phases
3)Agile helps to complete small projects,Waterfall helps to complete one single project
4)Agile introduces a product mindset with a focus on customer satisfaction.Waterfall focuses on successful project delivery
5)Agile allows requirement changes at any time,Waterfall avoids scope changes once the project starts

12121113406

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Re: Agile Vs Waterfall Method
« Reply #12 on: October 03, 2021, 09:08:18 pm »
Agile Vs Waterfall

What is Waterfall methodology?

Waterfall Model methodology which is also known as Liner Sequential Life Cycle Model. Waterfall Model followed in the sequential order, and so project development team only moves to next phase of development or testing if the previous step completed successfully.
What is the Agile methodology?

Agile methodology is a practice that helps continuous iteration of development and testing in the software development process. In this model, development and testing activities are concurrent, unlike the Waterfall model. This process allows more communication between customers, developers, managers, and testers.

Waterfall vs Agile Key Difference

 1.Waterfall is a Liner Sequential Life Cycle Model whereas Agile is a continuous iteration of development and testing in the software development process.
 2.In Agile vs Waterfall difference, the Agile methodology is known for its flexibility whereas Waterfall is a structured software development methodology.
 3.Comparing the Waterfall methodology vs Agile which follows an incremental approach whereas the Waterfall is a sequential design process.
 4.Agile performs testing concurrently with software development whereas in Waterfall methodology testing comes after the ?Build? phase.
 5.Agile allows changes in project development requirement whereas Waterfall has no scope of changing the requirements once the project development starts.

Advantages of Waterfall Model:

 1.It is one the easiest model to manage. Because of its nature, each phase has specific deliverables and a review process.
 2.It works well for smaller size projects where requirements are easily understandable.
 3.Faster delivery of the project
 4.Process and results are well documented.
 5.Easily adaptable method for shifting teams
 6.This project management methodology is beneficial to manage dependencies.

Advantages of the Agile Model:

1.It is focused client process. So, it makes sure that the client is continuously involved during every stage.
2.Agile teams are extremely motivated and self-organized so it likely to provide a better result from the development projects.
3.Agile software development method assures that quality of the development is maintained
4.The process is completely based on the incremental progress. Therefore, the client and team know exactly what is complete and what is not. This reduces risk in the development process.

Limitations of Waterfall Model:

1.It is not an ideal model for a large size project
2.If the requirement is not clear at the beginning, it is a less effective method.
3.Very difficult to move back to makes changes in the previous phases.
4.The testing process starts once development is over. Hence, it has high chances of bugs to be found later in development where they are expensive to fix.

Limitations of Agile Model

1.It is not useful method for small development projects.
2.It requires an expert to take important decisions in the meeting.
3.Cost of implementing an agile method is little more compared to other development methodologies.
4.The project can easily go off track if the project manager is not clear what outcome he/she wants.

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Re: Agile Vs Waterfall Method
« Reply #13 on: October 04, 2021, 11:12:08 am »
Waterfall method is a traditional approach to project management which mainly involves linear flow. Agile on the other hand involves iterative process.
When to use waterfall and when to use Agile:
Depending on the project, if it is predefined and there wont be any changes as the project progresses, we can use waterfall model. Whereas, agile is more adaptable as the project progresses, that means changes are always welcome.