Authentication Roadmap

Note: Not all questions may match a certain category on the roadmap.

Authentication Basics
Concepts
What is authentication? ->
Authentication vs. Authorization ->
Principles of secure authentication ->
Authentication Mechanisms
Concepts
Password hashing and salting ->
Session-based authentication ->
Token-based authentication ->
Single sign-on (SSO) ->
Two-factor authentication (2FA) ->
Session management and cookies
Identity and Access Management (IAM)
Concepts
Users, roles, permissions
Access control models (ACLs, RBAC)
Authorization best practices
Identity federation
Understanding OAuth 2.0 and OpenID Connect
Kerberos and LDAP for enterprise authentication
SAML for web-based single sign-on
JSON Web Tokens (JWT) for stateless authentication
Real-world Auth Implementations
Concepts
Auth0
Clerk
Firebase Auth
AWS Cognito
Supabase Auth