What projects are best suited to Scrum and what tools/techniques do you use to ensure consistency in your decision making?

Though Scrum is an excellent solution for many situations, it is not the proper solution in all circumstances. The Cynefin framework is a framework that helps understand the situation in which we have to operate and decide on a situation appropriate approach. It defines and compares the characteristics of five different domains.

Has anyone developed a scoring matrix using the Cynefin framework or similar to provide consistency in determining the appropriate solution approach to take, and if so, what are they and how have you applied them?

What projects are best suited to Agile and what tools/techniques do you use to ensure consistency in your decision making?

What projects are best suited to Scrum and what tools/techniques do you use to ensure consistency in your decision making?