Agile and Waterfall are two different approaches to project management that are commonly used in software development.
Agile is a flexible, iterative approach that focuses on delivering small increments of work quickly and responding to change. It involves frequent communication and collaboration with the customer to ensure that the final product meets their needs. Agile methodologies include Scrum, Lean, and Extreme Programming (XP).
Waterfall, on the other hand, is a more linear and structured approach in which progress flows in a single direction, like a waterfall, through a series of predetermined steps. Each step must be completed before the next one can begin, and there is generally less opportunity for flexibility or change.
One key difference between the two approaches is that in Agile, the requirements for the final product are likely to evolve and change over time, while in Waterfall, the requirements are fixed at the beginning of the project and do not change. This means that Agile is better suited to projects with highly uncertain or rapidly changing requirements, while Waterfall is better suited to projects with well-defined and stable requirements.
Another difference is that Agile emphasizes frequent communication and collaboration between team members and stakeholders, while Waterfall relies more on formal documentation and review processes.