WATERFALL METHODOLOGY

Within this methodology each consequent phase begins after the previous one has been done.

Strengths:
• Inputs and outputs of each phase are well defined
• Planned and predictable results
• Thorough resource planning
Weaknesses:
• Not flexible for changing business needs
• Low customer involvement which may cause unexpected results
• An “idealistic” model which cannot always be applicable in real life
When to use:
• Requirements are stable and well defined
• Changes to business needs are not expected
• Deep customer involvement is not required or cannot be done for some reasons