The client's requirements necessitate two distinct capabilities: serving feature services and serving image services. While a standard GIS Server can serve feature services, publishing dedicated "image services" with capabilities for managing and serving cached raster data requires the ArcGIS Image Server license role. The Image Server license role includes all the capabilities of the GIS Server Advanced role, thereby fulfilling both requirements. It enables the publishing of image services from raster datasets and also supports publishing feature services from an enterprise geodatabase like PostgreSQL.

A. GIS Server: This role can serve feature services but lacks the specific capability to publish "image services." It can only publish map services containing raster layers, which is a different service type.

C. Mission Server: This is a specialized role for real-time situational awareness and collaborative mapping during missions; it is not designed for hosting general image or feature services.

D. GeoAnalytics Server: This role is for distributed processing and analysis of large-scale vector and tabular data, not for serving the specified service types.

1. Esri ArcGIS Enterprise Documentation. "ArcGIS Server licensing roles." ArcGIS Enterprise 11.2 Documentation. Accessed May 2024.

Reference Detail: In the section describing the ArcGIS Image Server role

the documentation states

"The ArcGIS Image Server license role allows you to publish image services from mosaic datasets

raster datasets

and raster products... An ArcGIS Image Server license also includes the capabilities of the ArcGIS GIS Server Advanced license." This directly confirms that the Image Server role fulfills both requirements in the question.

2. Esri ArcGIS Enterprise Documentation. "What is an image service?" ArcGIS Enterprise 11.2 Documentation. Accessed May 2024.

Reference Detail: This page clarifies that an image service is the primary mechanism for serving raster and imagery data and that "To publish an image service

you must have the ArcGIS Image Server role licensed for your ArcGIS Server site." This confirms the necessity of the Image Server role for the first requirement.