1. An automated-application-release-management subsystem within a cloud-computing facility having multiple servers, data-storage devices, and one or more internal networks, the automated-application-release-management subsystem comprising: a dashboard user interface; an automated-application-release-management controller; an interface to a workflow-execution engine within the cloud-computing facility through which the automated-application-release-management controller invokes execution, by the workflow-execution engine, of workflow-implemented tasks that together comprise an application-release-management pipeline; an artifact-storage-and-management subsystem; and representations of application-release-management pipelines, stored in one or more memories within the cloud-computing facility, that each specifies a sequence of workflow-implemented tasks that together comprise an application-release-management pipeline.