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Geographic Information System (GIS) has become an essential tool in various fields, including disaster management, marketing analysis, urban planning, transportation, and more. Traditionally, GIS software has been associated with high costs, limiting accessibility, and complex licensing models. However, the rise of open-source technologies has transformed the GIS landscape, offering powerful and affordable alternatives.

The key components of GIS software are data management, spatial data analysis, mapping, and visualization. PostgreSQL database with PostGIS extension is sufficient to manage and store spatial data, especially since PostGIS supports queries for spatial analysis. Next, Web GIS frameworks such as Leaflet and OpenLayers make it easier to map and visualize spatial data on web-based mapping solutions, combined with open-source server technology like GeoServer, which also enables real-time data sharing and visualization, making spatial data more accessible. For more advanced geospatial analysis, there are also open-source GIS platforms like QGIS which provide a comprehensive suite of functionalities for spatial data analysis, geoprocessing, and visualization.

I will explain how to utilize open-source technologies in developing web-based GIS Applications so that we can provide powerful, scalable, cost-effective solutions for spatial data management, analysis, and visualization.