OGC Web Map Service (WMS)
Good old zoom and pan over maps.
The Use Case:
Zoom and pan over a seamless multi-layer map.
This OGC Web Map Service (WMS 1.3) offers a BlueMarble background layer plus DTM (Digital Terrain Models) data which can be toggled on and off.
The WMS client, OpenLayers 3.8.2,
parallelizes map visualization into multiple parallel GetMap requests
which the rasdaman engine responds to, likewise multi-parallel.