The certification mark, as used or intended to be used by persons authorized by the certifier, certifies or is intended to certify that the authorized persons have passed an assessment and thereby demonstrated knowledge and understanding of Scrum and product ownership and their ability to apply it to maximize the value delivered with a product in complex, real- world situations. Certified persons have proven a certain level of understanding of Scrum and product ownership as described in the Scrum Guide, a consistent use of terminology and approach to Scrum, how to maximize return on investment and optimize the total cost ownership of products and systems, along with a level of professionalism and commitment to improving the value delivered with software development using Scrum.