Which practice helps ensure quality in Agile development?

Built-in quality is a practice that emphasizes the necessity of incorporating quality measures throughout the Agile development process, rather than treating it as a separate or final step. This approach ensures that quality is an integral part of each development phase, from planning and design to coding and testing. By adopting built-in quality practices, teams can identify and address potential defects early in development, reduce waste, and enhance overall product quality.

Essentially, built-in quality encapsulates various practices such as continuous integration, automated testing, and peer reviews, which collectively contribute to delivering a robust and reliable product. This practice aligns with Agile principles that prioritize working software and customer satisfaction by ensuring that the product meets quality standards at every iteration.

The other options, while they may support aspects of the development process, do not emphasize quality in the same comprehensive manner as built-in quality does. For instance, bottleneck management focuses on optimizing flow and efficiency in the development process, end-to-end testing emphasizes a particular type of testing rather than a holistic approach, and frequent release notes primarily communicate updates to stakeholders rather than ensuring product quality during development.