Elastic Stack is a comprehensive end-to-end log analysis solution which helps in deep searching, analyzing, and visualizing the logs generated from different machines. Companies all over the world use these tools to perform critical business functions. These tools are most commonly used together for centralized logging in security and compliance, IT environments, business intelligence, and for web analytics as well.
Simply put, Logstash collects and analyzes logs, and then Elasticsearch indexes and stores the data. Kibana subsequently presents the information in visualizations which provide actionable insights.