Cloud computing represents a fundamental shift in information technology, in myriad ways. Virtualization is becoming almost an essential component of cloud computing. In public clouds, the inherent characteristics of multi-tenancy introduce risks that are not always present in private networks. Cloud vendors must create functionality that separates each customer’s data, even as they exist on shared resources. A lack of good SLAs (service-level agreements) and security policies runs pretty rampant throughout the cloud industry right now. If the vendor allows old and unpatched software on their internal company’s network, that can impact the security.”]
Source: https://www.csoonline.com/article/2625870/cloud-security-101–start-cramming-now.html