When you want to highlight specific locations on your map, you use markers. Markers are visual symbols placed at given points, making it easy for users to identify places of interest. In Leaflet.js, you create a marker by providing a pair of coordinates—a latitude and a longitude. These coordinates tell Leaflet exactly where on the map you want the marker to appear.

Markers help users interact with your map by drawing attention to important spots. For example, you might add markers to show store locations, tourist attractions, or meeting points. Each marker is created with a simple function call, and you can place as many as you need by repeating the process with different coordinates. This makes your maps much more informative and engaging.