> For the complete documentation index, see [llms.txt](/docs/llms.txt)

# Authentication | FusionAuth Docs

Learn about authentication methods, processes, and implementation by reading our articles on the topic.

# Authentication

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![Authentication](/img/icons/authentication.svg)

[Avoiding Authentication System Lock-InSteps you can take to avoid auth system lock-in include: considering portability, limiting usage, insulating your application with a facade, and having a backup plan.](/articles/authentication/avoid-lockin)[Combining SSO and MFA in FusionAuthIn this article, you'll learn how to combine single sign-on with multi-factor authentication in FusionAuth.](/articles/authentication/combine-sso-mfa-fusionauth)[Common Authentication Implementation Risks And How To Mitigate ThemWhat are risks of implementing authentication, authorization and user management, and how can you mitigate them?](/articles/authentication/common-authentication-implementation-risks)[The Developer Benefits of Single Sign-OnWhat is Single Sign-On and how can it help developers build successful applications?](/articles/authentication/developer-benefits-single-sign-on)[FedCM: A New Proposed Identity Standard That Could Change How We Log In on the WebLearn what FedCM is and how it works to enable secure federation flows and how it improves login security.](/articles/authentication/fedcm)[What is Passwordless Authentication and How Does It Work?Learn what passwordless authentication is, how it works, and its benefits for enhancing security and user experience with methods like magic links and biometrics.](/articles/authentication/how-passwordless-works)[How Does SSO Work? Single Sign-On ExplainedLearn how SSO (Single Sign-On) works to simplify user access. Explore the process, benefits, and security features that allow users to log in once and access multiple applications seamlessly.](/articles/authentication/how-sso-works)[Why Login Failures MatterAre you tracking your login failures? Learn about how to track them, why it matters, and what you should do to avoid login failure.](/articles/authentication/login-failures)[How FusionAuth Simplifies Compliance with MFA RequirementsCompliance is a broad term, but one thing is for sure, whatever makes it easier is good. Learn how MFA with FusionAuth can ease your compliance journey.](/articles/authentication/mfa-compliance-fusionauth)[What Is Multi-Factor Authentication (MFA)?Learn what multi-factor authentication (MFA) is, how it works, and the different types and methods used. Strengthen security by understanding MFA's role in verifying user identity.](/articles/authentication/multi-factor-authentication)[The Security Implications Of Passwordless AuthenticationLearn about passkeys and other passwordless authentication.](/articles/authentication/passwordless-authentication-security)[Passwordless SSO: Secure and Seamless AuthenticationExplore passwordless SSO and how it enhances security and user experience. Learn about passwordless authentication methods that provide safe, streamlined access without traditional passwords.](/articles/authentication/passwordless-sso)[Types Of Kubernetes AuthWhat are the three levels of Kubernetes authentication?](/articles/authentication/types-of-kubernetes-auth)[Securing Your User Experience with MFAA good user experience (UX) should be table stakes. This article delves into the decisions and processes you'll want to consider when adding multi-factor authentication (MFA) to your application.](/articles/authentication/user-experience-ux-mfa)[What Is WebAuthn and How Does It Work?Learn what WebAuthn is and how it works to enable secure, passwordless authentication. Explore its benefits, supported devices, and how it improves login security.](/articles/authentication/webauthn)[WebAuthn ExplainedAn in-depth look at how WebAuthn can help you add biometric authentication to your website.](/articles/authentication/webauthn-explained)[Why Passwordless Authentication Matters in the Age of WebAuthnUncover the essentials of WebAuthn for secure, passwordless online authentication and its protection against phishing.](/articles/authentication/why-passwordless-authentication-matters)