Authentication in .NET

 

Type	Common Use Case	Token Type / Auth Flow
✅ JWT Bearer Token	APIs, SPAs, Mobile Apps	Token-based (Stateless)
✅ Cookie Authentication	Web Apps (MVC / Razor Pages)	Cookie-based (Stateful)
✅ OAuth2 / OpenID Connect	Social Login, Enterprise SSO	External Identity Providers
✅ API Key Auth	Simple Public APIs	Key in Header/Query
✅ Windows Authentication	Intranet apps, Enterprise networks (AD/LDAP)	Windows/Kerberos
✅ Certificate Authentication	High-security APIs (B2B)	X.509 client certs
✅ Custom Token / HMAC	Legacy systems, Highly controlled environments	Custom logic

What does JWT Has 

JWT - JSON Web Token has 3 parts

Header  - metdata information

Payload  - User centric inform

Signature -