Computer-based mapping and analysis of location-based data best describes GIS. GIS stands for Geographic Information System and it is a computer-based system designed to capture, store, manipulate, analyze, manage, and display all kinds of geographical data.The primary objective of GIS is to visualize, manage, and analyze spatial data in real-world contexts. It combines hardware, software, and data to capture, analyze, and display geographic data. GIS is commonly used to help understand complex issues such as climate change, natural disasters, land use patterns, urban planning, environmental monitoring, and transportation planning. It is used in many different fields such as geography, engineering, environmental science, geology, urban planning, archaeology, and many more. GIS systems are very flexible and can handle a wide range of data types such as satellite imagery, aerial photography, maps, and data from GPS systems. The power of GIS comes from its ability to overlay multiple layers of data to identify patterns, relationships, and trends. This makes it an essential tool for decision-making in many different fields.