What is the difference between Search Head Pooling and Search Head Clustering?

Both of these capabilities are offered by Splunk to ensure the high availability of Splunk search heads in the event that one of them fails. The search head cluster, on the other hand, is a new feature, and search head pooling will be eliminated in future editions. A captain oversees the search head cluster, and the captain is in charge of the slaves. The search head cluster outperforms the search head pooling in terms of reliability and efficiency.