What types of services can use the shared instance pool?

The shared instance pool is a configuration within ArcGIS Enterprise that enhances resource management for map services published from ArcGIS Pro. When you use ArcGIS Pro to publish map services, these services can take advantage of the shared instance pool to efficiently manage and share resources among multiple requests. This approach allows for a more streamlined usage of server resources, ensuring that the necessary map data can be accessed and processed quickly when multiple users or applications are making requests.

The strength of the shared instance pool lies in its ability to optimally allocate resources for map services, which are built around the visual rendering of data, hence making it particularly effective for the types of services that draw heavily on map presentations generated from ArcGIS Pro. As a result, it enhances performance and responsiveness, which is crucial in scenarios where multiple users interact with the same datasets simultaneously.

While other services such as feature access services, WFS, and WMS can perform well under certain conditions, they do not inherently utilize the shared instance pool in the same way as the map services produced from ArcGIS Pro do. This distinction highlights the unique application of the shared instance pool specifically with ArcGIS Pro published map services, making it the correct choice in this context.