Geographic Information Systems (GIS) are computer-based tools that allow users to collect, analyze, and visualize spatial data. They help in mapping and understanding the relationships between different geographic features, such as roads, rivers, and land use. GIS is widely used in various fields, including urban planning, environmental management, and transportation. By integrating various data sources, GIS enables users to create detailed maps and perform complex analyses. This technology supports decision-making by providing insights into patterns and trends, making it easier to address issues like natural disasters, resource management, and public health.