The Service Integration for JIRA plugin enables easy integration of arbitrary webservices in JIRA.
The plugin provides a postfunction that triggers webservice-calls on JIRA status changes. This allows administrators to call arbitrary web services with custom parameters when an issue changes its status - e.g. call jobs on CI servers like Hudson/Jenkins, Bamboo, etc.
The triggered services may optionally issue callbacks to JIRA to transition an issue through an automated workflow.