Authentication is one of the big parts of every application. Security is always something that is changing and evolving. We’re using the same authentication methods from the dawn of the web. Unfortunately, passwords are increasingly broken. In this talk Viral will discuss about the JWT Authentication with JS which plays an important role in modern day application development where it is a lot more than just the login screen, People will get know about different ways of authentication and authorization, concepts that make up modern identity and how they can integrate with any particular language or stack and how they can use JSON Web Tokens to add both Authentication and Authorization to our functions with Auth0 authentication, which is an online web service that handles authentication protocols like OAuth2, LDAP, and OpenID Connect to allow clients to create authenticated services without the need to build the entire infrastructure. This way, an application can retrieve user-related data and showcase protected information to only logged in users.