What is the feature of Waterfall compared to other methodologies?

The feature of the Waterfall methodology (cascade model) is that the development process proceeds strictly sequentially through stages: requirements gathering → design → implementation → testing → deployment → maintenance.

Each stage is fully completed before moving on to the next, and returning to previous stages is difficult.

Unlike agile methodologies, Waterfall assumes detailed planning and fixed requirements at the start of the project. This is suitable for projects with clearly defined requirements and a stable environment.

Advantages of Waterfall:

• Simplicity of management and control.
• Clear documentation at each stage.

Disadvantages:

• Little flexibility to changes.
• Late detection of problems, as testing occurs after implementation.

Thus, Waterfall is a linear, sequential approach to development, where each stage must be completed before the next begins.