Scrum

The most common agile framework — fixed-length sprints, defined roles (Scrum Master, Product Owner, dev team), and a set ceremony cadence: planning, daily scrum, review, retro.

In practice: People use 'Scrum' and 'Agile' interchangeably, which annoys purists. Scrum is one specific way to do agile, not the only way.

• often confused with KanbanBoth are agile frameworks but Scrum uses fixed sprints while Kanban uses continuous flow with WIP limits.
• prerequisite for ScrumbanScrumban borrows structure from Scrum, so understanding Scrum first makes Scrumban easier to place.