Log management is the collective processes and policies used to administer and facilitate the generation, transmission, analysis, storage, archiving and ultimate disposal of the large volumes of log data created within an information system. ... Virtually all software applications and systems produce log files.

Splunk Course

Splunk is a platform to monitor, search and visualize real time machine data which is meant to IT infrastructure and business. Splunk used to make real time machine data accessible across any organization by searching process. It’s security and compliance is one of the most desired functionality by various organizations.

Elastic Search - Logstash - Kibana

The ELK Stack is a collection of three open-source products — Elasticsearch, Logstash, and Kibana. They are all developed, managed ,and maintained by the company Elastic. E stands for ElasticSearch: used for storing logs. L stands for LogStash : used for both shipping as well as processing and storing logs.