CommandBar's HelpHub is an AI-powered tool designed to enhance user assistance within applications. It features semantic search capabilities that connect user queries to relevant results, even if the exact keywords aren't used. The platform offers in-app help documentation, searchable video transcripts, and personalized search suggestions. It also allows content targeting based on user behavior and page context, providing a tailored help experience. Additionally, HelpHub provides insights into user needs and potential content gaps through analytics on trending and failed searches.