20 April 2015. The OGC membership has approved “OGC Compliance Overview - Guide for Software Acquisition” as an official OGC white paper. The document is located here: http://docs.opengeospatial.org/wp/15-002r5/15-002r5.html.
This white paper provides an overview of the OGC compliance process. It describes the benefits of acquiring OGC compliant products, as opposed to products that implement OGC standards but have not been certified as being OGC compliant.