Splunk is preferred because it is scalable and easy to implement. Spunk can be used to build and share reports with interactive visualizations like charts and graphs. Spark is also used to search for useful information in the data automatically. Splunk saves your searches and tags. Hence, it makes your system smarter.
Considering career growth, Many companies worldwide such as IBM, Salesforce, Facebook, HP, Adobe, etc. are using Splunk. Splunk engineer in the USA can earn US $148,134 per year on average.
If you are looking for an online course to learn Splunk, then check out this Splunk Training by Intellipaat that offers Instructor-led-training, hands-on projects, and job assistance.
Also, watch this video on Splunk: