**Summary Indexing** runs a scheduled search that saves aggregated results into a separate summary index. Future searches read the pre-computed summary instead of the raw data.
**Report Acceleration** is a more automated approach: Splunk automatically builds and maintains accelerated summaries behind the scenes for saved reports.
Both techniques trade disk space for dramatically faster query times on recurring reports.
index=web | stats count by status | collect index=summary marker="web_status_report"