Elastic Stack is a group of open source products from the Elastic company. It takes data from any type of source and in any format and searches, analyzes, and visualizes that data in real time. It consists of four major components, as follows:
- Elasticsearch
- Logstash
- Kibana
- Beats
Elastic Stack architecture overview (image taken from https://www.elastic.co/blog/beats-1-0-0)
It helps users/admins to collect, analyze, and visualize data in (near) real time. Each module fits based on your use case and environment.