“OPeNDAP in the cloud” is a hosted, Earthdata enterprise service that provides a single interface to all Earthdata cloud data enabled for OPeNDAP. Because of the move to a hosted service, there are some mechanisms that have changed for how users interact with the tool.
The way OPeNDAP-in-the-cloud works is by file (or by granule). In its current form, it expects access to be done by a specific data file. As such, it is driven by search and metadata more so than an entire collection of files. Search and metadata use the Earthdata Common Metadata Repository(CMR) - https://cmr.earthdata.nasa.gov/
To learn more go to TUTORIAL: https://podaac.jpl.nasa.gov/OPeNDAP-in-the-Cloud