"OpenEO: A GDAL for EO Analytics" was @edzer's initial title for an idea published on https://r-spatial.org/2016/11/29/openeo.html

The idea is now a standard. The OGC has officially published the openEO API specification as a new OGC Community Standard. The openEO Processes are published as an OGC Community Practice.

The full news article: https://www.ogc.org/announcement/openeo-api-ogc-community-standard/