Which decision rule is best for calculating results based on set conditions in tabular format?

A Decision Table is the most suitable choice for calculating results based on set conditions in a tabular format. This type of rule allows for the representation of complex decision logic in a clear and organized way. Each row of the table corresponds to a specific combination of conditions, and each column typically represents the outcomes or actions associated with those conditions.

By using a Decision Table, developers can easily visualize and manage numerous conditions and their corresponding actions without needing to write extensive conditional code. This not only enhances clarity but also makes it simpler to maintain and update the decision-making criteria as business needs evolve.

Other options, while useful in different contexts, do not offer the same structured approach for handling multiple conditions and outcomes simultaneously. Map Values, for example, is focused more on simple mappings of one value to another rather than handling multiple conditions at once. Strategy Rules are tailored for defining the flow of decision-making in a broader context, while When Rules are suitable for triggering certain actions based on single boolean conditions rather than providing a comprehensive tabular overview. Thus, the Decision Table stands out as the best method for this specific requirement.