This book is about how to run services, in any organisation, in any industry. It describes the basics, the core stuff, in realistic pragmatic terms. And it is pragmatically brief - we kept it to 50 paperback pages.
Reading an official OGC webpage today, it seems to me to imply that products certified by OGC before a certain time were assessed to a laxer set of criteria than more recent certifications. What do you infer when you read the following?