title: What are aliases in elasticsearch for?
body: <p>I recently started working in a company that uses Elasticsearch. While most of its concepts are somewhat similar to relational databases and I am able to understand them, I still don't quite get the concept of aliases.</p>
  
  <p>I did not find any such question here and the information provided on the <a href="https://www.elastic.co/guide/en/elasticsearch/reference/current/indices-aliases.html" rel="noreferrer">Elasticsearch website</a> did not help much either.</p>
  
  <p>Can someone explain what aliases are for and ideally include an example of a situation where they are needed?</p>