Amazon.com Inc.’s gaming division is cutting 180 jobs and shutting down two of its business units, including a channel on the company’s own livestreaming site Twitch.

The online retail giant is shuttering the Crown Channel, where gaming celebrities provided variety-show entertainment, and Game Growth, which helped creators promote their titles. Instead, the company will focus on developing games as well as distributing titles through its Prime subscription service, according to a memo to staff from Cristoph Hartmann, Amazon’s vice president of games.