What is the key difference between Agile and Waterfall project management approaches?

Correct answer: Agile is iterative and adaptive with frequent feedback cycles; Waterfall is sequential with phase gates and less flexibility

Option B is correct because Agile embraces iterative development, delivering working increments in short sprints with continuous stakeholder feedback, allowing the team to adapt to changing requirements throughout the project. Waterfall, by contrast, follows a strict sequential order of phases (requirements, design, build, test, deploy) with formal phase gates, making mid-project changes costly and difficult. Option A is incorrect because the two methodologies differ fundamentally in structure, flexibility, and feedback mechanisms. Option C is incorrect because Agile frameworks such as Scrum and Kanban are widely used in marketing, HR, finance, and many non-IT disciplines. Option D is incorrect because Waterfall projects are not inherently faster; Agile's iterative delivery often produces usable value sooner, and project speed depends on scope and context, not methodology alone.