This document provides an overview of search functionality in Kibana, including the Discover UI, search types (free text, field level, filters), the Kibana Query Language (KQL) and Lucene Query Language, advanced search types (wildcard, proximity, boosting, ranges, regex), and examples of queries. It also demonstrates how to perform a basic search in Kibana by choosing an index, setting a time range, using free text search, refining with fields and filters, and inspecting surrounding documents.