Web Services Eventing (WS-Eventing) provides a protocol that allows Web services to subscribe to or accept subscriptions for event notification messages.
This specification defines a protocol for one Web service (called an "event sink") to register interest (called a "subscription") with another Web service (called an "event source") in receiving messages about events (called "notifications"). To improve robustness, the subscription is leased by an event source to an event sink, and the subscription expires over time. An event source may allow an event sink to renew the subscription.
Organizations: BEA, Microsoft, and TIBCO
More information: WS-Eventing
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