Which of the following helps enhance the security posture of an organization in a cloud environment?

The correct answer is Security as a Service (SECaaS), which is a model that delivers security services via the cloud. SECaaS enhances an organization's security posture by providing scalable security solutions that are continuously updated and managed by specialized service providers. This allows organizations to leverage the expertise of security professionals without needing to maintain extensive in-house capabilities. SECaaS covers a range of services, including threat detection, firewall management, intrusion detection, and security monitoring, all of which are critical in mitigating risks associated with cloud environments. By outsourcing security functions, organizations can focus resources on their core activities while ensuring robust protection against evolving threats.

Other options, while also related to enhancing security, do not provide the same breadth of scalable and managed security services. For example, Identity Access Management is crucial for controlling who has access to resources, but it is just one aspect of a comprehensive security strategy. Similarly, a Cloud Security Broker can facilitate better security governance and policy enforcement, but it typically serves as an intermediary rather than a full-service security solution. Sandboxing is a technique used to isolate applications or processes to prevent unauthorized access, which is useful but does not encompass the overall security posture like SECaaS does.