WebAuthn

WebAuthn is a web standard API enabling public-key authentication with local or external authenticators.

What is WebAuthn?

WebAuthn is a web standard API enabling public-key authentication with local or external authenticators. It is part of the practical vocabulary used by administrators, developers and IT teams. Understanding it helps identify where the technology sits in an architecture and what problem it is intended to solve.

What is it used for?

It is mainly used to passkeys, security keys, and phishing-resistant MFA. In production, its usefulness depends on the surrounding configuration, compatibility requirements and operational constraints.

How to recognize it in practice

You may encounter WebAuthn in product interfaces, configuration files, logs, API documentation, network diagrams or troubleshooting procedures. Always check the context before changing a setting based only on its name.

Points to watch

The website domain is part of credential security and cannot be changed arbitrarily. Test changes, document the previous state and keep a rollback path for production systems.

In short

WebAuthn = a web standard API enabling public-key authentication with local or external authenticators. Its main value is to passkeys, security keys, and phishing-resistant MFA.