Waterfall Vs Agile
Let's analyze the core differences between the plan-driven Waterfall approach and the Agile methodology.
Waterfall: Project development flows steadily downwards like a waterfall from one phase to another. The common phases are: Define, Analyze, Design, Build, Test, Launch, and Maintain. The preceding phase must be completed before the next phase can begin.
Agile: Work evolves in an iterative and incremental manner with an emphasis on collaboration, responding to change, and continuous improvement. Its core foundation was laid with the Agile Manifesto for Software Development in 2001.
Waterfall: Encourages conformance to processes and tools
Agile: Values people interactions over processes and tools
Waterfall: Requires comprehensive documentation
Agile: Values working software over comprehensive documentation
Waterfall: Restricts new ideas
Agile: Encourages experimentation and new ideas
Waterfall: Promotes a process-centric environment
Agile: Promotes a people-centric environment
Waterfall: Dependent on contract negotiation with customers or suppliers
Agile: Encourages customer collaboration over contract negotiation
Waterfall: Requires conformance to a detailed project plan
Agile: Embraces change over following a plan
Waterfall: Demotivated team members. Requires a continuous effort to motivate the team.
Agile: Creates high performing, self-organizing, and motivated teams
Waterfall: Requires a huge rework to accommodate late changes
Agile: Welcomes changes even late in development with minimal rework
Waterfall: High cost of change
Agile: Low cost of change
Waterfall: Upfront planning
Agile: Just-in-time planning
Waterfall: A higher possibility of mismatch between requirements and the final product
Agile: Frequent feedback loops reduce any mismatch between expectations and results
Waterfall: Unhappy customers in spite of the hard work by the development team
Agile: Delighted customers due to frequent feedback and response to changes
Waterfall: Requires upfront decisions
Agile: Decisions wait till the last responsible moment (LRM)
Waterfall: Does not encourage regular interactions with customers
Agile: Promotes daily collaboration with customers
Learn more on Agile, Lean, Scrum, or Kanban with below reads: