Splunk is a big data software that can help you in turning raw data into insights. Splunk architecture comes with a set of tools that help you integrate with data sources and then perform collection, queries, indexing, analysis, and visualization. Splunk can also reveal historical trends, correlate multiple sources of information, and help in thousands of other ways.
If you want to brush up your knowledge in this field then I recommend you to go for Intellipaat Splunk-Certification-Training.
Before that do check out this video on how Intellipaat helped Uday Agarwal in getting a salary hike -