defaultDocument
In computing, defaultDocument refers to a configuration setting that determines which resource should be served when a URL targets a directory rather than a specific file. Its purpose is to provide a predictable landing page for directory requests and to improve user experience and SEO by avoiding directory listings.
Different web servers implement the concept with their own terminology and syntax. Apache uses the DirectoryIndex
Operational behavior: if one of the configured filenames exists in the requested directory, it is returned
Notes: Many frameworks expose similar functionality under names such as DefaultFiles, DefaultDocuments, or defaultDocument, often integrated