Content-based discovery involves searching within the actual text or binary content of documents to find matches for keywords, phrases, or patterns. In e-discovery, when the requirement is to locate documents containing a specific phrase, searching based on content is the most direct and reliable method.
Other approaches, such as metadata-based discovery, only examine properties like creation date or author, which do not reveal the presence of specific text. Label-based discovery relies on pre-applied classification labels, which may not always be accurate. Location-based discovery limits searches to folders or storage locations but does not guarantee relevance.
Content-based discovery provides completeness in legal and regulatory investigations. It ensures that no relevant documents are overlooked simply because of inconsistent labeling or metadata, thus supporting compliance and defensibility in court proceedings.