Many businesses that work with sensitive data view the transition to the cloud with trepidation, which is not entirely without good reason. New security capabilities transform the public cloud into a trusted data-secure environment by effectively locking data access to insiders or external attackers. The attraction to the confidential cloud is based on the promise of exclusive data control and hardware-grade minimization of data risk. But data-open clouds bring the risk of greater data exposure to insiders, as well as the inability to lock down a trusted environment under total control of the CISO.
Source: https://www.helpnetsecurity.com/2021/04/28/confidential-cloud/