https://docs.splunk.com/Documentation/Splunk/8.2.2/Admin/Distdeploylicenses#:~:text=License%
20requirements,do%20not%20index%20external%20data.
"All Splunk Enterprise instances functioning as management components needs access to an Enterprise license. Management components include the deployment server, the indexer cluster manager node, the search head cluster deployer, and the monitoring console."
https://docs.splunk.com/Documentation/Splunk/8.2.2/Updating/Aboutdeploymentserver
"The deployment server is the tool for distributing configurations, apps, and content updates to groups of Splunk Enterprise instances."

https://docs.splunk.com/Documentation/Splunk/7.3.1/DistSearch/SHCarchitecture Scroll down to section titled, How the cluster handles concurrent search quotas, "Overall search quota. This quota determines the maximum number of historical searches (combined scheduled and ad hoc) that the cluster can run concurrently. This quota is configured with max_Searches_per_cpu and related settings in limits.conf."

The deployer is a Splunk Enterprise instance that you use to distribute apps and certain other configuration updates to search head cluster members. The set of updates that the deployer distributes is called the configuration bundle.https://docs.splunk.com/Documentation/Splunk/8.1.3/DistSearch
/PropagateSHCconfigurationchanges#:~:text=The%20deployer%20is%20a%20Splunk,is%20called%20the%
20configuration%20bundle.
https://docs.splunk.com/Documentation/Splunk/8.0.5/Updating/Updateconfigurations First line says it all: "The deployment server distributes deployment apps to clients." Reference: https://docs.splunk.com/Documentation/Splunk/8.0.5/Updating/Updateconfigurations