A heat map is a visual representation of data that uses colors to show the intensity or frequency of certain values in a specific area. For example, in a website analysis, a heat map can illustrate where users click the most, helping designers understand which parts of the page attract attention. The warmer colors, like red and orange, indicate higher activity, while cooler colors, like blue and green, show less engagement. These maps are useful in various fields, including marketing, healthcare, and urban planning. By quickly conveying complex information, heat maps allow decision-makers to identify trends and patterns, making it easier to strategize and improve outcomes.