Which concept allows a user to access multiple platforms with a single set of credentials?

Which concept allows a user to access multiple platforms with a single set of credentials?

• A. Single Sign-On
• B. Federated Identity Management
• C. Responsive Design
• D. Mobile Apps

Answer: (A)

Single Sign-On lets you sign in once to access multiple platforms without entering credentials again. It relies on an identity provider that confirms who you are and issues a trusted token that other services accept. When you move from one platform to another, those services rely on that initial authentication, so you don’t have to log in repeatedly. This makes access smoother and reduces password fatigue, while giving organizations a centralized way to enforce security measures like multi-factor authentication. Federated Identity Management is related in that it enables cross-domain identity verification and can support SSO across different organizations, but the specific feature described—one login for many services—is the hallmark of Single Sign-On. Responsive Design and Mobile Apps aren’t about authentication across platforms.

Single Sign-On lets you sign in once to access multiple platforms without entering credentials again. It relies on an identity provider that confirms who you are and issues a trusted token that other services accept. When you move from one platform to another, those services rely on that initial authentication, so you don’t have to log in repeatedly. This makes access smoother and reduces password fatigue, while giving organizations a centralized way to enforce security measures like multi-factor authentication. Federated Identity Management is related in that it enables cross-domain identity verification and can support SSO across different organizations, but the specific feature described—one login for many services—is the hallmark of Single Sign-On. Responsive Design and Mobile Apps aren’t about authentication across platforms.