Amazon entered the e-book subscription market Friday by launching
Kindle Unlimited includes access to more than 600,000 e-books and thousands of audiobooks, Amazon said. The service is available on Kindle devices and Kindle iOS and Android apps. Customers can try it free for 30 days.
The launch is no surprise. Earlier this week Amazon apparently inadvertently posted information about the service on its website, but quickly removed it.
Kindle Unlimited will compete against Oyster and Scribd, two companies that unveiled e-book subscription services in the past year.