What is SAML?
SAML is an acronym used to describe Security Assertion Markup Language (SAML). Its main role in online security is to allow you to access multiple web applications using single sign-on (SSO).

What is OAuth2?
OAuth2 is an open standard authorization protocol or framework that provides applications with the ability to provide “secure, authenticated access.”
OAuth2 does not pass password data, but uses authorization tokens to prove an identity between consumers and service providers. OAuth2 is an authentication protocol that allows you to authorize one application's interaction with another on your behalf without revealing your password. Authorization is asking for permission to do something; authentication is about proving that you are the right person. OAuth2 does not pass authentication data between consumers and service providers.

SAML vs. OAuth2 (Difference between SAML and OAuth2)
1. SAML 2.0 is designed to authenticate a user and provide user identity data to a service. OAuth 2.0, on the other hand, is designed as an authorization protocol that allows a user to grant a service provider access to certain resources.

2. Security Assertion Markup Language (SAML) is an authentication process. When you go to work in the morning and log into your computer, you probably used SAML. Open Authorization (OAuth) is an authorization process. Use it to switch from one service to another without entering a new username and password.

3. Both protocols can be used for web single sign-on (SSO), but SAML is usually user-specific while OAuth is usually application-specific.

4. SAML is responsible for the authentication process that involves a user's identity. SAML is a bit like a house key. It gives you access to the facility. OAuth2 is responsible for the authorization process that involves a user's permissions. OAuth is like the house rules that dictate what the person can and cannot do when they are in the building.

#OAuth2 #SAML #AuthenticationAuthorization

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