A framework that uses fixed-length iterations, called sprints, usually lasting 2-4 weeks. Scrum teams have defined roles (e.g., Scrum Master, Product Owner) and hold regular ceremonies (e.g., daily stand-ups, sprint planning, sprint review, and retrospectives).

The description provided refers to the Scrum framework, a popular agile methodology used in project management, particularly in software development. Here's a step-by-step breakdown:

1. Fixed-length iterations: In Scrum, work is divided into iterations known as sprints, which typically last 2-4 weeks. During each sprint, the team works to complete a set of tasks.

2. Defined roles: Scrum teams have specific roles. The Scrum Master ensures the team follows Scrum principles and practices, removes obstacles, and shields the team from external interferences. The Product Owner represents the stakeholders and the voice of the customer, and is responsible for maximizing the value of the product.

3. Regular ceremonies: Scrum includes several regular meetings, also known as ceremonies. These include:

   • Daily stand-ups: A short meeting where team members update each other on what they did the previous day, what they plan to do today, and any obstacles they're facing.
   • Sprint planning: A meeting at the start of each sprint where the team decides what work will be done in the upcoming sprint.
   • Sprint review: A meeting at the end of each sprint where the team reviews the work completed and not completed, and presents the completed work to the stakeholders.
   • Retrospectives: A meeting after the sprint review where the team reflects on the past sprint and identifies areas for improvement in the next sprint.