Although all the SDOs are focussed on open standards, the level of openness becomes clear when you look at each SDO, Some are industry bodies, which means that you need to be an employee of a company to participate in such initiatives. IEEE probably is the only SDO, where you can contribute as an individual, irrespective of your affiliation.
In second cloud computing standards meeting held at Bangalore on May 24, Dr Debu from Huawei explained the work in progress in ITU on cloud security. This mainly consists of Cloud definition as Europe does not agree with NIST defintions, PKI infrastructure for Cloud, Certificate Management, x.509 V3 Certificate and Key management and also Personal cloud Security Framework. David Bernstein, IEEE WG chair explained how the work done over the last three years has culminated in the two work groups P2301 and P2302. He explained that IEEE objective was not to duplicate other SDO's efforts but to organise the same. He also spoke of open source test bed for cloud interoperability and invited participation from Indian organizations.
For more information on India standards initiative and to be part of the cloud computing SIG team, check out the IEEE-SA India SIG website