ArcGIS Online is a cloud-based mapping and analysis tool developed by Esri. It allows users to create, share, and analyze geographic information through interactive maps and applications. With a user-friendly interface, it caters to both beginners and experienced users, enabling them to visualize data and make informed decisions. Users can access a wide range of ready-to-use maps, layers, and tools, making it easy to integrate various data sources. ArcGIS Online supports collaboration, allowing teams to work together on projects and share insights in real-time, enhancing productivity and communication in various fields such as urban planning, environmental management, and disaster response.