Does supporting the GDST Standard mean a company has to comply with all aspects of the Standard immediately?

No. It is clearly understood that implementation of the Standard is a journey companies pledge to complete and that companies will move through implementation at different speeds.
GDST Partners must make a specific implementation goal, based on the Standard – a clear ambition for the future, but not an immediate requirement for today. We share and celebrate these commitments on our website and in external communications.