Waterfall Model
The Waterfall Model is a sequential design process, often used in Project Management for Software and Application Lifecycle Management. It involves a linear progression through phases of conception, initiation, analysis, design, construction, testing, production/implementation, and maintenance. Each phase must be completed before the next one starts, resembling a waterfall flowing downwards. This model emphasizes detailed planning and documentation early in the development process, making it suitable for projects with well-defined requirements and low to medium risk. It's a traditional approach that works well when changes can be kept to a minimum once a phase is completed.