ArcGIS API for JavaScript
The ArcGIS API for JavaScript is a web mapping library developed by Esri that enables developers to build interactive mapping applications and geospatial visualizations in web browsers. It provides tools for displaying maps, performing spatial analysis, and integrating with ArcGIS Online or ArcGIS Enterprise services. The API supports 2D and 3D mapping, with features like data visualization, geocoding, and real-time data integration.
Developers should learn this API when building web applications that require advanced mapping, GIS (Geographic Information Systems) functionality, or location-based services, such as environmental monitoring, urban planning, or logistics tracking. It is essential for projects that need to visualize spatial data, perform geospatial queries, or integrate with Esri's ecosystem of geospatial tools and services.