Question

Describe the major differences between traditional waterfall and agile software developments. In your opinion, what are the most notable advantages and disadvantages of each methodology?

Answer 1

Q: Describe the major differences between traditional waterfall and agile software developments.

Waterfall software development	Agile software development
it is a sequential approach to develop software	it is an incremental approach.
it is a structured software development appraoch. so it does not provide flexibility.	Agile software development is a flexible approach of development.
software is developed as single project.	in agile software is a collection of more than one project.
we can not change the requirements after development started.	agile is flexible so we can change the requirements at a later stage.
testing is done after the build phase of the project.	testing is performed simultaneously with the development of the project.

Q: What are the most notable advantages and disadvantages of each methodology?

Ans:

Waterfall advantages

• Easy model to manage.
• fast delivery of the project.
• suitable for small size project.
• well documented results

Waterfall disadvantages

• can not be used for large size project.
• can not move to the previous step.
• if requirements are not clear in beginning then we can get wrong output at end
• customer may disappoint with results.

agile software advantages

1. based on incremental progress.
2. focused on the client.
3. the client is involved in each stage and continuously.
4. it ensures the quality of development is maintained.

agile software disadvantages

1. not a good option for small size projects.
2. need of an expert to take an important decision.
3. cost of implementation is high as compared to another method.