Wikipedia
Star Trek: Discovery premiered on September 19, 2017, at ArcLight Hollywood, before debuting on CBS and CBS All Access on September 24. The rest of the 15-episode first season was streamed weekly on All Access. The series' release led to record subscriptions for All Access, and positive reviews from critics who highlighted Martin-Green's performance. A second season was ordered in October 2017.
Digital Trends
It had a rocky beginning, but Star Trek: Discovery ended its first season as a critical and commercial success for streaming platform CBS All-Access. To the delight of fans, the show received an official “Make it so” on season 2, ensuring that the crew of the U.S.S. Discovery will have more adventures among the stars.
Vulture (Season 1 final review)
I thought Star Trek: Discovery delivered the strongest first season overall since the original series, which premiered on NBC almost 52 years ago, and that, on evidence of this first run of episodes, it could be one of the all-time greats if it plays its cards right. At its best, Discovery surprised and moved me in ways that very few freshman series manage to do. This show has brains, soul, and a big heart. There were missteps here and there, to be sure. But there always are in first seasons, and the ones seen here were minor compared to, say, those of The Next Generation, which became a classic eventually, but was tedious and hesitant until pretty deep into season two.