What is the difference between SSO and federated identity?

Last Updated Jun 8, 2024
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Single Sign-On (SSO) enables users to access multiple applications with one set of login credentials, streamlining user experience and enhancing security by minimizing the number of passwords to manage. In contrast, federated identity refers to a system that allows users to authenticate across various domains or organizations using a single identity provider, facilitating collaboration while retaining control over user information. SSO typically operates within a single organization, while federated identity connects multiple organizations, often across different trust realms. SSO enhances internal application access efficiency, whereas federated identity supports cross-organizational access and interoperability. Both approaches aim to simplify user authentication, improve security, and reduce the likelihood of password fatigue.

Definition

Single Sign-On (SSO) allows users to access multiple applications with a single set of login credentials, enhancing convenience and reducing password fatigue. Federated identity, on the other hand, involves linking and sharing identity information across different organizations, enabling users to gain access to systems outside their primary environment without needing separate credentials. In essence, SSO simplifies user authentication within a single domain, while federated identity facilitates secure cross-domain access through trust relationships. Understanding these concepts is crucial for implementing effective identity management solutions in your organization.

Technology Foundation

Single Sign-On (SSO) allows users to authenticate once and gain access to multiple applications without needing to log in again for each one. Federated identity expands this concept by enabling different organizations or domains to share authentication and identity management, allowing seamless user access across various systems. With SSO, user credentials are stored and managed within a single system, while federated identity relies on trusted third-party identity providers to handle user authentication across different platforms. Understanding these differences can enhance your organization's security and user experience when managing access to diverse applications.

Authentication Mechanism

Single Sign-On (SSO) allows users to access multiple applications with a single set of credentials, enhancing user experience by minimizing the need for multiple logins. In contrast, federated identity involves multiple identity providers collaborating, enabling users to access various systems across different organizations without needing separate accounts. SSO simplifies user management and boosts security within a single organization's ecosystem, while federated identity offers interoperability and trust between different organizations' systems, facilitating seamless access. Understanding these authentication mechanisms helps you better implement secure and user-friendly access controls within your organization or across partners.

Protocols Used

Single Sign-On (SSO) primarily utilizes protocols like SAML (Security Assertion Markup Language) and OAuth for managing user authentication across multiple services with a single set of credentials. In contrast, federated identity systems enable users to maintain a single identity across various domains by leveraging protocols such as OpenID Connect and WS-Federation. While SSO grants access through a centralized login process within the same domain, federated identity allows for a seamless user experience across different organizations or domains by sharing identity information securely. Understanding these differences is crucial for implementing secure and efficient authentication solutions in your organization.

Implementation Scope

Single Sign-On (SSO) enables users to access multiple applications with one set of credentials, simplifying the login process and enhancing user experience. In contrast, federated identity allows users to authenticate across different security domains and organizations, facilitating a seamless experience while maintaining distinct and secure credential management within each domain. Both systems prioritize security and user convenience, but they differ in scope--SSO is typically used within a single organization, while federated identity is ideal for partnerships or integrations across multiple entities. You can leverage these technologies to enhance authentication flows and improve security measures in your applications.

User Experience

Single Sign-On (SSO) allows users to authenticate once and gain access to multiple applications, enhancing convenience and reducing password fatigue. In contrast, federated identity extends authentication across different domains or organizations, enabling seamless access while maintaining distinct security protocols. With SSO, you typically manage access within a single organization, whereas federated identity involves collaboration between diverse entities, allowing users to leverage their credentials across external systems. Understanding these differences is crucial for optimizing authentication strategies and enhancing user experience in modern digital environments.

Security Features

Single Sign-On (SSO) streamlines user authentication by allowing access to multiple applications with one set of credentials, enhancing user experience while reducing password fatigue. Federated identity expands this concept by enabling secure sharing of identity information across multiple security domains, allowing users from one organization to access resources in another without separate log-ins. SSO primarily focuses on user convenience within a single ecosystem, whereas federated identity emphasizes interoperability between different systems and organizations. Understanding these differences is crucial for implementing robust security frameworks tailored to your organizational needs.

Integration Complexity

SSO, or Single Sign-On, simplifies user authentication across multiple applications with a single set of credentials, streamlining user experience while minimizing password fatigue. In contrast, federated identity management enables users from different domains to authenticate using identities managed by third-party identity providers, promoting interoperability among various systems. Your integration complexity may increase with federated identity due to the need for protocols like SAML or OAuth, ensuring secure token exchanges and trust establishment between different entities. While SSO can be simpler for internal applications, federated identity requires a robust architecture to manage trust relationships, making it crucial to assess your organizational needs carefully.

Trust Establishment

Single Sign-On (SSO) allows users to log in once and gain access to multiple applications without re-entering credentials, streamlining user experience across platforms. In contrast, federated identity involves shared authentication across different domains or organizations, enabling users from one entity to access resources in another without needing separate credentials. Trust is established in federated identity through agreements and protocols, such as SAML or OAuth, that ensure secure exchanges of authentication data. Understanding these differences empowers you to choose the right solution for your identity management needs, balancing ease of use with security requirements.

Use Cases

Single Sign-On (SSO) allows users to access multiple applications with one set of credentials, streamlining the login process for enhanced user experience. Conversely, federated identity enables different organizations to share user identity information securely, allowing users to authenticate across various domains without needing separate accounts. For example, when you use Google credentials to log into a third-party service, that's federated identity in action, while logging into multiple Google services with one Google account showcases SSO. Understanding these differences can help you choose the right identity management strategy for your enterprise needs.



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Disclaimer. The information provided in this document is for general informational purposes only and is not guaranteed to be accurate or complete. While we strive to ensure the accuracy of the content, we cannot guarantee that the details mentioned are up-to-date or applicable to all scenarios. This niche are subject to change from time to time.

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