An article is a structured document where the smallest part of information is the map itself. Topics only organize the information in the article. The topics composing an article are not searchable.
Publishing content as an article is a way to invite users to enter a publication from the beginning, no matter what their search query is.
No specific connector is needed to publish articles to Fluid Topics. Fluid Topics processes articles through standard connectors, for example, DITA, and FTML.