Federated Identity, OAuth, SSO, MFA Explained

In Azure, federated identity is a system for managing and authenticating user identities across multiple organizations and systems. It allows users to use a single set of credentials to access multiple systems and applications, and enables organizations to share and manage user identity information in a secure and centralized way.

In Azure, federated identity is typically implemented using Azure Active Directory (AAD), which is a cloud-based identity and access management service. AAD provides a central repository for user identities and enables organizations to manage user access to Azure resources and services.

To implement federated identity in Azure, organizations can use AAD to establish trust relationships with other identity providers, such as on-premises Active Directory or other third-party identity providers. This allows users to authenticate with their existing identities and access Azure resources and services using a single set of credentials.

In addition to supporting federated identity, AAD also provides a range of features and services for managing and securing user identities, such as multi-factor authentication, identity protection, and conditional access.

In summary, federated identity in Azure is a system for managing and authenticating user identities across multiple organizations and systems using Azure Active Directory. It allows organizations to establish trust relationships with other identity providers and enables users to access Azure resources and services using a single set of credentials.


Federated identity is a system for managing and authenticating user identities across multiple organizations and systems. It allows users to use a single set of credentials to access multiple systems and applications, and enables organizations to share and manage user identity information in a secure and centralized way.

Multi-Factor Authentication (MFA) is a security process that requires users to provide more than one form of authentication when accessing a system or application. MFA can be used to add an additional layer of security to user authentication, and can help prevent unauthorized access to systems and data.

Single Sign-On (SSO) is a system that allows users to access multiple systems and applications with a single set of credentials. SSO can be used to simplify the login process for users and reduce the risk of unauthorized access to systems and data.

In summary, federated identity is a system for managing and authenticating user identities across multiple organizations and systems, MFA is a security process that requires users to provide multiple forms of authentication, SaaS is a model of software delivery in which a software application is provided to users over the internet on a subscription basis, and SSO is a system that allows users to access multiple systems and applications with a single set of credentials.

OAuth, SAML Identity providers

Federated authentication is a method of allowing users to access multiple independent systems using a single set of credentials. This can be useful in situations where users need to access multiple systems but don’t want to have to remember different sets of login information for each one.

There are several different protocols that are commonly used for federated authentication, including OAuth and SAML.

OAuth (Open Authorization) is an open standard for authorization that allows users to grant third-party access to their resources without sharing their passwords. It is commonly used to allow users to log in to third-party applications using their social media or other online accounts.

SAML (Security Assertion Markup Language) is another standard for federated authentication. It is commonly used in enterprise environments to allow users to access multiple systems within an organization using a single set of credentials. SAML allows systems to securely exchange authentication and authorization data.

Both OAuth and SAML are widely used for federated authentication, and which one is the best fit for a particular use case will depend on the specific requirements and needs of the systems involved.

Federated Identity pattern

The federated identity pattern is a design pattern that allows users to use a single set of credentials to access multiple independent systems. This pattern is often used in situations where users need to access multiple systems but don’t want to have to remember different login information for each one.

There are several different approaches to implementing the federated identity pattern, but all of them involve the use of a central identity provider (IdP) that is responsible for authenticating users and issuing security tokens that can be used to access the other systems.

Some common approaches to implementing the federated identity pattern include:

  • Single sign-on (SSO): This approach allows users to log in to a central system, and then use that login to access multiple other systems without having to re-enter their credentials.
  • Identity federation: This approach involves the use of a central IdP that is responsible for authenticating users and issuing security tokens that can be used to access multiple systems.
  • Identity brokering: This approach involves the use of a third-party service that acts as an intermediary between the user and the various systems they need to access. The third-party service authenticates the user and issues security tokens that can be used to access the other systems.

Overall, the federated identity pattern is a useful way to provide users with convenient access to multiple systems while still maintaining strong security.

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