Splunk is an American software company that allows users to search and analyze real-time data across various sources to generate reports, visualizations, alerts and dashboards. Splunk Enterprise is Splunk's main product that makes it easy to collect, analyze and act on big data from different sources for dashboard creation and searches. The key features of Splunk include interactive searching, subsearching, customizable dashboards, searching by field, and saved searches. Case studies show that Splunk improves operational efficiencies by providing real-time data analytics.