Credentials like Project Management Professional (PMP®) and certifications such as Certified Scrum Master bring genuine financial benefit to the credential holder and demonstrate attained knowledge on a subject matter. A large industry has spawned around certification training. Virtually all PMP®s, actively working as project managers in industries with high complexity and/or high uncertainty, have prior experience working with Agile principles like rolling wave planning, progressive elaboration, frequent retrospectives, or a daily stand-up during some phase of the project. The Scrum Alliance has a solid grasp around the throat of anyone seeking certification through their organization, so the Standard path tends to be the path. The organization focuses on face-to-face interactions between trainer and student to maintain standards of quality on the content and validate the value certified trainers bring to the brand. The Scrum Alliance certifications focus on the Scrum framework.