The ELK stack is a data analytics pipeline that combines three Elastic products: Elasticsearch for storing and searching log and event data; Logstash for collecting, transforming, and ingesting data from multiple sources; and Kibana for visualising and querying indexed data through dashboards. Beats agents-lightweight data shippers installed on servers-are often included as a fourth component. The ELK stack is the standard architecture for centralised log management and application observability.
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