The Question
Eternal
https://screenrant.com/star-trek-discovery-prime-kevin-timeline/
Like Abrams' Star Trek films, Star Trek: Discovery was made under Bad Robot's license of Star Trek from CBS. Bad Robot and Paramount wanted to continue their license to produce more Star Trek outside of the increasingly expensive feature films. CBS is happy to use Star Trek: Discovery as a means to promote CBS All-Access, but Paramount and Bad Robot own the series, the production costs of which were largely financed by Netflix, which paid an exorbitant amount for the rights to distribute Discovery internationally.
However, it's because Paramount and Bad Robot own Discovery, not CBS, which owns the Prime timeline Star Trek, that there was doubt among skeptical Trekkers about Discovery's producers' long-held claim that Discovery is set in the Prime universe and will synch up with the established Prime timeline canon. As a prequel, Discovery can claim that it begins in the Prime universe (as J.J. Abrams' first Star Trek did for the first few minutes), but does the series remain in the Prime timeline?