What key concept differentiates Scrum from other Agile frameworks?

The key concept that differentiates Scrum from other Agile frameworks is the use of time-boxed iterations known as Sprints. In Scrum, a Sprint is a specific period, typically between one to four weeks, during which a set amount of work is completed and made ready for review. This structured time frame allows teams to focus on delivering incremental improvements and functionality, making it a fundamental aspect of Scrum's iterative process.

While other Agile frameworks may incorporate similar practices, the strict use of Sprints with defined lengths and a fixed set of deliverables sets Scrum apart. Sprints facilitate regular assessment and adaptation, enabling teams to respond quickly to changes and continually improve their processes and products. This emphasis on consistent, predictable delivery through Sprints is a defining characteristic that underpins the Scrum methodology and differentiates it from other Agile approaches that might not adhere to such a rigid iteration framework.