Ory

Ory is a cloud-native, API-first identity and access management (IAM) platform that handles authentication and authorization for humans, applications and, increasingly, AI agents. Built on open-source components and running at massive scale — managing 3.3 billion identities — it gives developers a flexible, lock-in-free way to secure logins, permissions and machine-to-machine access.

What is Ory?

Ory provides the building blocks of modern identity: flexible authentication (OAuth 2.0, OpenID Connect, SAML SSO, social and email login), fine-grained authorization, and session management, all through a headless, API-first design. Because it's modular, teams mix and match the components they need and keep full control of the user experience, rather than accepting a vendor's fixed UI.

Who it's for

Ory serves three main audiences: consumer-facing apps needing secure signup and login (CIAM), enterprise B2B products that require SSO, SAML and SCIM for business customers, and teams deploying AI agents and machine-to-machine workflows that need runtime security. Clients like OpenAI, Société Générale, Mistral AI and T. Rowe Price show its range from AI startups to major financial institutions.

Key features

• OAuth 2.0, OpenID Connect, SAML SSO, social and email authentication
• Fine-grained role-based and attribute-based access control
• Headless, modular architecture with unlimited UI customization
• Stateless horizontal scaling with global edge caching
• Production observability: metrics and trace-level logging
• Runtime security and audit controls for AI agents
• SCIM and enterprise B2B provisioning
• Open-source, self-hosted, on-prem and managed deployment options

Flexibility without lock-in

Ory's defining principle is architectural flexibility. Its "mix and match" component approach and headless design let teams customize authentication and authorization flows completely, and because the core is open source, there's no proprietary trap — you can self-host, run on-prem with enterprise support, or use the managed Ory Network. That freedom to change your mind later is a sharp contrast to closed IAM services.

Built for real scale

Ory is engineered for very large deployments: stateless horizontal scaling and global edge caching support trillion-scale performance, and it already manages billions of identities. For a fast-growing product, that headroom matters — authentication is on the critical path of every request, and Ory is built so it won't become the bottleneck as traffic climbs.

Identity for AI agents

A forward-looking strength is Ory's focus on AI. Alongside traditional CIAM and B2B use cases, it provides runtime enforcement and audit controls for autonomous agents and machine-to-machine workflows — answering the emerging question of how to authenticate and authorize AI systems safely. As agents take on real actions, having identity and access designed for them (not just for humans) becomes increasingly important.

Enterprise-ready observability

Ory treats identity as production infrastructure. It ships metrics, trace-level logging and performance intelligence so teams can monitor auth in real time, diagnose issues and prove compliance. Combined with fine-grained access control and enterprise provisioning (SSO, SAML, SCIM), that observability makes it suitable for regulated industries where audit trails and reliability aren't optional.

One platform for every identity

What ties Ory together is that a single platform covers consumer login, enterprise B2B access and AI-agent security at once — so a company doesn't need one tool for customer accounts, another for SSO, and a third for machine access. As products grow from a simple signup form into enterprise deals requiring SAML and SCIM, and then into agentic features, Ory scales across all of it without a re-platform, which is exactly why organizations from AI startups to major banks standardize on it.

Why choose Ory

For developers and enterprises that want powerful, customizable identity without vendor lock-in, Ory is a compelling choice. Its API-first modular design, open-source foundation, massive scale, AI-agent security and flexible deployment options make it a practical way to secure users, applications and agents alike — on your own terms and infrastructure when you want them.