Risk avoidance is the practice of coming up with alternatives so that the risk in question is not realised.

According to "The NIST Definition of Cloud Computing," in IaaS, "the capability provided to the consumer is to provision processing, storage, networks, and other fundamental computing resources where the consumer is able to deploy and run arbitrary software, which can include OSs and applications. The consumer does not manage or control the underlying cloud infrastructure but has control over OSs, storage, and deployed applications; and possibly limited control of select networking components (e.g, host firewalls)."

They are considered as forms of data breached and require notification. Further cloud customer is legally liable.

Orchestration is the difference between cloud computing and traditional virtualization; virtualization abstracts resources. but it typically lacks the orchestration to pool them together and deliver them to customers on demand. instead relying on manual processes.
Ref: CSA Security Guidelines V4.0