# Webauthn In A Nutshell

- [Authenticators](/v4.8/webauthn-in-a-nutshell/authenticators.md): What is an authenticator?
- [Ceremonies](/v4.8/webauthn-in-a-nutshell/ceremonies.md): Registration and Authentication process overview
- [User Verification](/v4.8/webauthn-in-a-nutshell/user-verification.md): Prove to me who you claim to be!
- [Metadata Statement](/v4.8/webauthn-in-a-nutshell/attestation-and-metadata-statement.md)
- [Extensions](/v4.8/webauthn-in-a-nutshell/extensions.md)