Wazuh indexer
From Wazuh (overview)
The Wazuh indexer is a highly scalable full-text search and analysis engine. It is responsible for indexing and storing alerts generated by the Wazuh server. It can be installed as a single-node or multi-node cluster, depending on the environment needs.
AskAkin hosts
AskAkin runs the indexer tier for you: cluster sizing, retention policies, backup expectations, and health monitoring so search stays fast during incidents and audits.