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Question: What are the differences between Agile and Waterfall Methodologies?

Answer:

Agile	Waterfall
It separates the project development lifecycle into sprints.	The software development process is divided into distinct phases.
It follows an incremental approach	Waterfall methodology is a sequential design process.
Agile methodology is known for its flexibility.	Waterfall is a structured software development methodology so most times it can be quite rigid.
Agile can be considered a collection of many different projects.	Software development will be completed as one single project.
Agile is quite a flexible method that allows changes to be made in the project development requirements even if the initial planning has been completed.	There is no scope for changing the requirements once the project development starts.
The agile methodology follows an iterative development approach because of this planning, development, prototyping, and other software development phases may appear more than once.	All the project development phases like designing, development, testing, etc. are completed once in the Waterfall model.
The test plan is reviewed after each sprint	The test plan is rarely discussed during the test phase.
Agile development is a process in which the requirements are expected to change and evolve.	The method is ideal for projects which have definite requirements and changes not at all expected.
In Agile methodology, testing is performed concurrently with software development.	In this methodology, the “Testing” phase comes after the “Build” phase
Agile introduces a product mindset where the software product satisfies the needs of its end customers and changes itself as per the customer’s demands.	This model shows a project mindset and places its focus completely on accomplishing the project.
The agile methodology works exceptionally well with Time & Materials or non-fixed funding. It may increase stress in fixed-price scenarios.	Reduces risk in the firm fixed price contracts by getting a risk agreement at the beginning of the process.
Prefers small but dedicated teams with a high degree of coordination and synchronization.	Team coordination/synchronization is very limited.
Product owner with team prepares requirements just about every day during a project.	Business analysis prepares requirements before the beginning of the project.
The test team can take part in the requirements change without problems.	It is difficult for the test to initiate any change in requirements.
The description of project details can be altered anytime during the SDLC process.	Detail description needs to implement the waterfall software development approach.
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, the project manager plays an essential role during every stage of SDLC.

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