Which type of cloud service can be protected by a firewall controlled by the organization rather than by the cloud provider?

When considering which type of cloud service allows an organization to implement its own firewall controls, Infrastructure as a Service (IaaS) stands out as the most appropriate choice. IaaS provides users with access to computing resources such as virtual machines, storage, and networks. Because the organization manages the virtual machines and any software deployed on them, it has the capability to configure security features, including firewalls.

In IaaS environments, users have greater control over the network configuration and can deploy their own security policies, including firewall rules that protect their instances and network access. This setup enables organizations to tailor their security posture to meet specific requirements and compliance standards, enhancing the overall security of their cloud infrastructure.

In contrast, Software as a Service (SaaS) typically means the service provider manages the entire stack, leaving less room for the organization to impose its own security measures. Platform as a Service (PaaS) also limits the user's control over the underlying infrastructure and networks, as the provider handles the cloud platform’s security. Functions as a Service (FaaS) abstracts the infrastructure completely, focusing on deploying code without direct management of the underlying resources.

Therefore, IaaS is the cloud service model that allows organizations the freedom to establish and