How often should the build be executed in a Scrum framework?

In the Scrum framework, executing the build whenever new or changed code is checked into version control is aligned with best practices for ensuring continuous integration. This approach helps maintain code quality and allows for early detection of integration issues. By building frequently, the development team can ensure that all code changes work well together and do not introduce defects. This practice promotes a smooth progression of development and ensures that the product increment is always in a potentially shippable state.

This method also allows for immediate feedback to developers, enabling them to address errors promptly rather than accumulating problems over a longer period. In Scrum, where iterative and incremental delivery is key, this frequent build process supports the overall goal of delivering working software at the end of each Sprint.

Additionally, while executing the build at the end of the Sprint might ensure that the product increment is potentially shippable, it does not support real-time quality assurance and responsiveness that continuous integration provides. Timing the build based on the completion of code review or at the start of each Sprint could lead to delays and integration issues, making it less effective in terms of immediate feedback and quality assurance.