- low-value and high-risk
- high-value and high-risk
- high-value and low-risk
- low-value and low-risk
It is suggested that high business value, high-risk items are worked on first. While that may seem counterintuitive, the earlier this work is done, the sooner the team will move to mitigate the issues and unknowns—leading to a higher quality product. If there’s a failure, it will occur early and relatively inexpensively. (Source)