A search command that controls some aspect of how the search is processed. It does not directly affect the final result set of the search. For example, you might apply the noop command to a search to enable or disable a search optimization that helps the overall search complete faster.
Other examples of orchestrating commands include redistribute and localop. The lookup command also becomes an orchestrating command when you use it with the
For more information
In the Search Manual:
On the Splunk Developer Portal: