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Cloud Security is a collection of policies, controls and technologies that work together to protect cloud-based systems, data and infrastructure. It includes aspects like identity management (IAM) with granular access control and multifactor authentication, as well as governance with policies to manage threat detection, monitoring and mitigation. It also includes securing the cloud with protections such as firewalls, IPSes and antimalware. Adding IAM to these tools provides additional layers of defense to help prevent hackers from breaching and gaining entry into sensitive data.

While larger companies can choose private clouds that are dedicated to them, smaller businesses must often rely on public cloud services. This means their data may be housed alongside the information of other clients in the same space, and this increases the vulnerability of those shared servers. Ideally, this should be avoided by making sure your cloud service provider provides the option for your data to be securely separated from others via segmented servers or encrypted.

While the majority of CSPs provide standard cybersecurity tools for their customers, many enterprises find that those tools are not enough to mitigate all potential threats to their data in the cloud. This has led to the development of a shared responsibility model for handling cloud security between a CSP and its customer, which clarifies which tasks a CSP is responsible for and which ones a client must handle in-house to ensure no gaps are left open for hackers. This includes encrypting all data at rest, in use and in motion. It is also essential to secure the entire technology stack in the cloud, including all applications and workloads.