Which outcome is expected as a Scrum Team matures?

A mature Scrum Team is expected to continuously improve their quality standards and deliver potentially releasable Increments of value that meet the Definition of Done12. The Definition of Done is a shared understanding of what it means to complete a Product Backlog item, and it may vary from one Scrum Team to another3. As the Scrum Team matures, they may expand their Definition of Done to include more rigorous criteria, such as higher levels of testing, documentation, performance, security, usability, etc . This way, they ensure thattheir product Increment is always ready for release and meets the expectations of the stakeholders and customers12.