What is a primary feature of web maps in contrast to web layers?

Web maps are primarily designed to be interactive and user-friendly, providing a dynamic experience for users. They allow for various interactive elements such as zooming, panning, and identifying features. Users can engage with the map and its elements in a way that enhances their understanding of the spatial information presented.

In contrast, web layers are typically datasets that are served over the web and can be used to construct web maps but do not inherently provide the same level of interactivity. While web layers are essential for delivering data, web maps serve to present that data to an end-user in a way that feels intuitive and accessible.

The other options highlight misconceptions about web maps that do not align with their actual purpose and functionalities. For instance, web maps can indeed be connected to data, they are generally hosted in the cloud, and while some might function offline when cached, the primary feature is not dependent on offline use.