Difference between JWT, OAuth, and SAML for Authentication and Authorization in Web Apps?

Understanding the differences between Popular Web Authentication and Authorization Standards: JWT, OAuth, and SAML

Hello folks, one of the most common question on Java developer interviews now a days is difference between JWT, OAuth2.0, and SAML? and when to use them. If you are preparing for Java developer interviews and asked this question and looking for answer then you have come to the right place.

In the past, I have shared several resources for Java interviews like 21 Software Design Pattern questions, 10 Microservice Scenario based questions, 20 SQL queries from Interviews, 50 Microservices questions, 60 Tree Data Structure Questions, 15 System Design Questions, and 35 Core Java Questions and 21 Lambda and Stream questions and in this article, I am going to to answer this frequently asked question once for all.

While JWT, OAuth, and SAML are all well known standards that are used for authentication and authorization purposes in web applications there are many differences between them.

For example, JWT stands for JSON Web Token and it is a standard for securely transmitting information between parties as a JSON object. It is used to…