Waterfall is a traditional, linear project management methodology where you complete one phase before moving on to the next. It's characterized by thorough planning and documentation upfront, and each phase has a specific start and end date. This approach can be effective for projects with well-defined requirements and little need for change during the project.
Agile, on the other hand, is an iterative approach that emphasizes flexibility and collaboration. Agile projects are broken down into smaller, manageable pieces called iterations or sprints. The team works on a set of features during each iteration and adjusts the plan as needed based on stakeholder feedback. Agile is suitable for projects with changing requirements or where the final product is not fully defined at the beginning.
Scrum is a specific Agile framework that focuses on short, time-boxed iterations called sprints, usually lasting two to four weeks. Scrum uses specific roles, such as the Product Owner, Scrum Master, and Development Team, and ceremonies like daily stand-ups, sprint planning, and sprint reviews to ensure clear communication and collaboration. Scrum is particularly effective for software development projects and teams that require rapid adaptation to change.