What is defined as a digital representation containing layers in ArcGIS Online?

A web map is defined as a digital representation containing layers in ArcGIS Online. In the context of ArcGIS Online, a web map serves as a foundational element where various data layers—such as points, lines, and polygons—can be added and managed. It allows users to visualize spatial data in an interactive manner, as each layer can represent different datasets or themes, providing context and enhancing understanding of the information being presented.

Web maps not only organize these layers but also enable users to manipulate them by adjusting visibility, symbology, and pop-up configurations. They are integral to creating and sharing maps online, making them essential for web mapping applications and as a basis for further development into more complex applications, such as dashboards or story maps. The ability to combine and interact with multiple layers distinguishes web maps as a key component of data representation in ArcGIS Online.