State-of-play of the OGC API development. The work has been progressing, to develop various OGC API standards that support a variety of resources. API technologies are in focus of standardization discussions within the geospatial community. Discussions and initiatives in the OGC reached a milestone in 2018: the release of the first of the OGC API standards. Since then work has been progressing to develop additional OGC API standards supporting a variety of resources. OGC members & staff investigated the potential value that OpenAPI could offer to geospatial services. Existing web service standards were effectively web APIs, modernizing their means of getting content to the web required a fairly fundamental change in the underlying design. The first OGC API standard approved & published was Part 1 of the OGC API – Features standard. The pattern “OGC API [resource]” was coined and led to initiatives to define and test draft OGC APIs for Coverages, Maps, Tiles, Styles & Processes. Outputs will support the evolution of a solid, common core and the advancement of a new generation of OGC standards leveraging modern Web API approaches