For the current relationship of this specification to others, see this specification group: SOAP.
| 2005-01-25 | SOAP Message Transmission Optimization Mechanism Recommendation |
| 2004-11-16 | Proposed Recommendation |
| 2004-08-26 | Candidate Recommendation |
| 2004-06-08 | Last Call Working Draft |
| 2004-02-09 | Working Draft |
| 2003-07-21 | First Public Draft |