This component is essentially just a single CallAsync Server Action.

The action calls an HTTP/REST URL (input parameter) asynchronously.
You can also (optionally) specify another HTTP/REST URL (input parameter) as callback handler along with status and optional custom headers(input parameter) to be sent to the callback handler from the main process.

The Entire Documentation on how to use this action and what each parameter mean is Embedded in the "Description" of each element.

Examples:
CallAsyc action

CorrelationId

DefaultAckDelay_ms parameter details.