What is the Elastic Stack?
The Elastic Stack is also known as the "ELK" Stack. So, what is it? Let's see what the developers have to say in their own words (https://www.elastic.co/what-is/elk-stack):
"ELK" is the acronym for three open source projects: Elasticsearch, Logstash, and Kibana. Elasticsearch is a search and analytics engine. Logstash is a serverside data processing pipeline that ingests data from multiple sources simultaneously, transforms it, and then sends it to a "stash" like Elasticsearch. Kibana lets users visualize data with charts and graphs in Elasticsearch. The Elastic Stack is the next evolution of the ELK Stack.
Figure 1: Elastic Stack (source: https://www.elastic.co/what-is/elk-stack)
As we can see from the statement, the Elastic Stack is really a collection of different projects working together to cover the whole spectrum of data collection, storage, retrieval, analytics, and visualization. What is nice...