Which visual type is most appropriate for depicting strong performance of sub-organizations across multiple countries?

Choosing a heat map as the visual type for illustrating the strong performance of sub-organizations across multiple countries is particularly effective due to its ability to convey data density and variations in performance in a visually intuitive manner. Heat maps use color gradients to represent values, allowing for quick identification of high and low performance areas at a glance.

For this scenario, where performance needs to be assessed across multiple entities (sub-organizations) and geographical locations (countries), a heat map allows stakeholders to easily see where strengths are concentrated and can highlight patterns or correlations that might not be as obvious with other visual types.

In contrast, line charts are more suitable for showing trends over time, making it difficult to gauge performance just at a singular moment or for multiple categories simultaneously. Pivot tables, while useful for summarizing data, lack the visual appeal and immediate interpretability that a heat map provides. Bar charts can illustrate comparisons well but may become cluttered if there are many sub-organizations and countries, reducing clarity in performance assessment.