Which service integrates security services into corporate infrastructure?

Security as a Service (SECaaS) is the correct answer because it specifically refers to the outsourcing of cybersecurity services to a third-party provider. This model integrates various security services—such as threat detection, prevention, and response—into a company's existing IT infrastructure seamlessly. By leveraging SECaaS, organizations can enhance their security posture without needing to invest in extensive in-house infrastructure or security expertise.

On the other hand, Software as a Service (SaaS) focuses on delivering software applications over the internet, eliminating the need for local installations but not necessarily incorporating security services directly as an integral part of the corporate infrastructure. Infrastructure as a Service (IaaS) primarily provides virtualized computing resources over the internet, which can host applications and services but does not inherently include the security-focused integration offered by SECaaS. Containers as a Service (CaaS) provides container management services, facilitating deployment and scaling of applications in containers but again, it does not specifically address security services in a comprehensive manner.