Network Defense Essentials (NDE) Practice Exam 2025 – Your All-in-One Resource to Exam Success!

The correct answer is Identity as a Service (IDaaS) because this model specifically focuses on providing authentication and identity management services through a third-party provider. IDaaS solutions typically include functions like single sign-on (SSO), multi-factor authentication (MFA), and user provisioning. These services allow organizations to outsource their identity and access management to specialized vendors, ensuring that authentication processes are secure, efficient, and compliant with various regulations.

In contrast, Infrastructure as a Service (IaaS) primarily offers virtualized computing resources over the internet, focusing on foundational IT infrastructure like servers, storage, and networking, but does not manage authentication services. Similarly, Platform as a Service (PaaS) provides a platform allowing developers to build, deploy, and manage applications without focusing directly on authentication. Software as a Service (SaaS) delivers software applications over the internet but does not specialize exclusively in authentication services like IDaaS does. Hence, IDaaS is the distinct service that aligns specifically with managed authentication solutions.