Agile vs Waterfall

What is the 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.



The advantages of the waterfall model:

  • This is one of the easiest models to manage. Due to its nature, each stage has a specific deliverable and review process.
  • It is suitable for small projects whose needs are easy to understand.
  • Deliver projects faster
  • The process and results are well documented.
  • Adaptable shift methods
  • This project management method is very helpful for managing dependencies.

The advantages of the agile model:

  • It is a process aimed at customers. Therefore, you can ensure that customers continue to participate at every stage.
  • Agile teams have great motivation and self-organization capabilities, so it is possible to get better results from development projects.
  • Agile software development methods ensure that development quality is maintained
  • The process is based entirely on incremental progress. Therefore, customers and teams know exactly what is complete and what is not. This can reduce the risk in the development process.


The limitations of the waterfall model:

  • It is not an ideal model for large projects
  • If the requirements are not clear at the beginning, this method is less effective.
  • It is difficult to return to making changes in the previous stage.
  • Once development is complete, the testing process begins. Therefore, it is likely that errors will be discovered in future development, and the cost of repairing these errors is high.

Limitations of agile models:

  • For small development projects, this is not a useful method.
  • It requires experts to make important decisions at the meeting.
  • Compared with other development methods, the cost of implementing agile methods is only slightly higher.
  • If the project manager is not sure what result he/she wants, the project can easily get off track.

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