Canon

There is a Wikipedia page that attempts to define Star Trek canon. It is, in the way of most Wikipedia pages on contested topics, thorough, carefully footnoted, and ultimately incapable of settling the argument it was written to resolve. The page lists what counts, what doesn’t count, what Gene Roddenberry said, what he later contradicted, and the various positions Paramount has taken over the decades. It will not tell you whether the DS9 relaunch novels matter. It will not tell you whether Destiny counts. These are questions canon cannot answer, because they are not really canon questions.