What is the difference between a map service and a feature service?

The distinction between a map service and a feature service is fundamentally rooted in their functionalities and intended use cases. A map service is typically designed to display geospatial data, rendering it as maps that users can interact with visually. This includes the ability to view various layers of information, symbology, and basemaps, but it does not allow for manipulation of the underlying data directly on the client side.

On the other hand, a feature service extends beyond mere display capabilities. It not only presents geospatial data visually but also enables users to perform operations such as querying, editing, and updating the features within the dataset. This means that individuals working with a feature service can interact with the data in a more dynamic way, making it ideal for applications where data manipulation and real-time updates are required.

This distinction makes option B the correct choice, as it accurately captures the primary functions of each service type. A map service focuses on visualization, while a feature service encompasses interactivity with the data itself, making it possible to work with features in a more profound way. Understanding this difference is crucial for effective use of ArcGIS services, especially in enterprise geospatial applications where both visualization and data interaction are frequently needed.