Follow this post to set up Azure AI Search with SharePoint as a datasource, including how to target a specific library rather than only the default document library. SharePoint datasource container options Azure AI Search supports three container modes for SharePoint sources: Value Description defaultSiteLibrary Indexes only the site’s default document library (usually Documents). allSiteLibraries Indexes all document libraries in the site. Does not automatically include subsites. useQuery Lets you explicitly specify which libraries or sites to include/exclude using the query property.