Before installing ITSI, you must ensure the environment meets all prerequisites: a supported Splunk Enterprise version, adequate hardware resources (CPU, RAM, disk), and the required add-ons such as the IT Essentials Work (ITE Work) app and the SA-ITOA package.
ITSI is installed via the Splunk UI (Manage Apps → Install from File) or via the command line. Post-installation, the KV Store must be running because ITSI stores its configuration data (services, entities, thresholds) in KV Store collections, not in .conf files.