## Documentation Index

Fetch the complete documentation index at: [/llms.txt](/content/llms.txt)

Use this file to discover all available pages before exploring further.

Auth0 lets you customize your users’ entire authentication experience. You can:

- Brand and internationalize all interaction with end users
- Define your own logic to customize and extend how Auth0 works
- Integrate Auth0 with third-party software to add capabilities

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## Brand Customization

##### Seamlessly integrate Auth0 with your own brand and localize the experience for international users.

[**Customize Login Pages** \\ \\ Customize the Universal Login and Classic Login experiences](/content/docs/customize/login-pages/index.html)

[**Custom Domains** \\ \\ Unify the login experience with your own brand and products.](/content/docs/customize/custom-domains/index.html)

[**Customize Emails** \\ \\ Brand and modify the content and flow of email to end users.](/content/docs/customize/email/index.html)

[**Customize Multi-factor Authentication SMS and Voice Messages** \\ \\ Learn how to customize SMS and voice messages sent by Auth0 during enrollment and verification.](/content/docs/customize/customize-sms-or-voice-messages/index.html)

[**Internationalization and Localization** \\ \\ Learn how to handle different languages within your Auth0 applications.](/content/docs/customize/internationalization-and-localization/index.html)

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## Code Customization

##### Create Actions to customize and extend Auth0’s capabilities with custom logic. Or maintain legacy Rules and Hooks.

[**Actions** \\ \\ Customize Auth0 capabilities with secure, tenant-specific, versioned functions that execute at certain points during the Auth0 runtime.](/content/docs/customize/actions/index.html)

[**Events** \\ \\ Use Auth0 Events to build event streams.](/content/docs/customize/events/index.html)

[**Forms** \\ \\ Extend your identity flows with additional steps and custom logic with Forms.](/content/docs/customize/forms/index.html)

[**Rules** \\ \\ Maintain legacy rules that your applications use in the authentication pipeline.](/content/docs/customize/rules/index.html)

[**Hooks** \\ \\ Maintain legacy hooks for selected extensibility points of the Auth0 platform.](/content/docs/customize/hooks/index.html)

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## Third-Party Customization

##### Take advantage of third-party integrations and Auth0 extensions to expand what Auth0 can do for your systems.

[**Extensions** \\ \\ Use Auth0 Extensions to install applications or run commands/scripts that extend the capabilities of the Auth0 base product.](/content/docs/customize/extensions/index.html)

[**Integrations** \\ \\ Reduce implementation time with Auth0-reviewed integrations you can trust.](/content/docs/customize/integrations/index.html)

[**Log Streams** \\ \\ Monitor and respond to events such as changed passwords or new registrations with your own business logic.](/content/docs/customize/log-streams/index.html)