What is Agile?
Agile is an iterative product-development methodology in which teams work in brief, incremental “sprints,” and then regroup frequently to review the work and make changes. The agile methodology encourages frequent feedback and the ability to switch focus and priority quickly. This is in contrast to the more traditional, sequence-based, waterfall methodology, where product managers set long-term plans in discrete phases for development teams to execute.
See Also: Agile Manifesto, Agile Frameworks