The web service publishes DMR 5G data and is designed for displaying a detailed terrain model in 3D via a web interface in the Web Mercator coordinate system. The data are provided in the specialised LERC format (https://github.com/Esri/lerc), which enables their efficient compression for fast transfer and rendering in 3D applications. The source data are stored in the WGS 84 / Pseudo-Mercator coordinate system (EPSG:3857, alias 900913). Existing Esri applications such as Scene Viewer (https://www.esri.com/software/scene-viewer), ArcGIS Pro (http://www.esri.com/en/software/arcgis-pro), or ArcGIS Earth (http://www.esri.com/software/arcgis-earth) can be used to display the data. The service can also be used to display the terrain model in 3D in custom web applications using the ArcGIS API for JavaScript 4.x library, or in native applications using ArcGIS Runtime SDK.