Elevation Analysis services are curated, authoritative elevation data, coupled with analysis tools hosted by Esri. Before these services were available, users had to gather and prepare elevation data, and then find the right analytical tools to perform the analysis tasks. With the ArcGIS Elevation Analysis Services, you can now perform these analytical tasks quickly and easily without having to collect, maintain, or update terabytes of base data on local machines. As new areas and better resolutions are made available, they will be included in these analytical services. In addition, since March 2019, using these services no longer requires ArcGIS Online service credits!
To teach our user community how to leverage the powerful Evaluation Analysis services in ArcGIS Pro, ArcGIS Online, ArcGIS Enterprise, or other web clients, my colleague Steve Kopp and I created this training video which is freely available to all.