Do you believe the WS-Reliability spec will solve key QoS issues with Web services?

WS-Reliability addresses some of the core QoS aspects as they relate to reliable communication over un-reliable transports. In particular, this spec addresses the guaranteed delivery, elimination of duplicate messages,etc., Web Services QoS not only includes reliable messaging but also other attributes like service availability, service level assurances/agreements, authorization, access control, etc., Hence, to cover the entire spectrum of QoS attributes, multiple standards are required. These include core Web services standards as well as management and security standards. You may want to note that some of the advanced B2B protocols such as, ebXML, BizTalk, Rosettanet, have had some of these features built into their specifications for years. Current and emerging standards are now extending these capabilies to a wide spectrum of Web services ranging from simple synchronous RPC style services to multi-party B2B handshake via asynchronous Web services.