---
source_url: "https://logto.io/?utm_source=openai"
title: "Logto: Modern auth infrastructure for developers"
mirrored_at: 2026-08-25T03:32:23.369Z
host: logto.io
cited_in_42a: true
mirror_canonical: "https://index.42a.ai/logto.io/index__q__utm_source_openai"
---

> **Original source:** https://logto.io/?utm_source=openai

### Protocols that work

OAuth 2.1, OIDC, SAML. Auth, SSO, RBAC.

### Any app, anywhere

From local to cloud. From web to mobile. From one app to many.

### No billing surprises

50K MAUs free. Token-based. Pay-as-you-go.

### Built for devs

Open-source. Fast integration. Developer-first support.

## Millions of identities. Proven reliability.

Trusted by public companies, fast-growing startups, and government agencies.

## For builders who hate rebuilding auth

Tired of duct-taping auth across your SaaS, AI agents, and B2B apps? Logto got you covered.

### Sign-in experience

#### Email and SMS passwordless

Passwordless that feels obvious: one-time codes via email or SMS.

#### Social sign-in

Social sign-in, done. Google, Apple, Discord, and more.

#### Password authentication

Still the default. Still what users expect.

#### Multi-app omni sign-in experience

One sign-in flow. Every app. Looks native. Works everywhere. Zero friction.

### Security and control

#### Multi-factor authentication

MFA in minutes. Passkeys, authenticator apps, backup codes.

#### Role-based access control

Set rules, control access. RBAC for global and organization-level resources.

#### Enterprise SSO

SSO with Okta, Entra, SAML, any IdP. Enterprise SSO without the enterprise headache.

### Advanced flows

#### Multi-tenancy (organizations)

Multi-tenancy that scales. Group users, manage resources, permission everything.

#### IdP for 3rd-party

Your app. Your ecosystem. Be the IdP with a consent flow that doesn’t suck.

#### Impersonation

Troubleshoot like a hero. Safely impersonate users, fix issues fast.

[Impersonation](https://docs.logto.io/developers/user-impersonation)

## Grow and scale without security debt

### Integrate Logto

Add Logto. Up and running in minutes.

### Idea and proof of concept

Build fast. Test faster. Validate your idea with Logto.

### A single app

Secure your app. Focus on shipping, not auth.

### Multi-app structure

Handle multiple apps. Manage everything, scale cleanly.

### Sell to enterprises

Ready for enterprise. SSO, compliance, and support baked in.

### Secure identities at every stage of your product

-   Any stage
-   Any model
-   Any stack

Launching your first app? Expanding to multi-product? Selling to enterprise? Logto handles auth and SSO. No matter where you are.

### Built for trust. Audited for security.

![SOC 2 logo](https://logto.io/assets/soc2-DeNSns8d.png)

#### Standards & Privacy Compliant

Logto is SOC 2 Type II certified: proof we take security, uptime, and data privacy seriously.

-   Open-source
-   Self-hosting ready
-   Role-Level Security
-   Argon2 password hashing
-   High availability

![Protection](https://logto.io/assets/protection-DAgdAG-H.svg)

-   Community-driven
-   Data protection
-   TLS everywhere
-   Data isolation
-   Database encryption

Logto Cloud runs in EU 🇪🇺, Australia 🇦🇺, US 🇺🇸, and Japan 🇯🇵 regions. With DevSecOps, advanced encryption, and rock-solid data isolation.

[

See how we keep you safe

](https://logto.io/trust-and-security)