Keycloak

Keycloak is a powerful, open-source identity and access management (IAM) solution that provides enterprise-grade authentication and authorization capabilities without the complexity and cost of proprietary alternatives. Developed by Red Hat and accepted to the Cloud Native Computing Foundation (CNCF) at the Incubating maturity level on April 10, 2023, Keycloak has become the go-to IAM solution for organizations seeking scalable, secure, and standards-based identity management. Supporting OpenID Connect, OAuth 2.0, and SAML protocols, Keycloak seamlessly integrates with modern applications, legacy systems, and cloud-native architectures. With millions of deployments worldwide and active community support, Keycloak delivers enterprise features including single sign-on, multi-factor authentication, identity brokering, and user federation in a single, cohesive platform.

Common Use Cases

Enterprise IT Teams: Implement single sign-on (SSO) across internal applications, HR systems, collaboration tools, and custom business applications, reducing password fatigue and improving security posture. Integrate with existing Active Directory or LDAP servers to maintain centralized user management while adding modern authentication capabilities. SaaS Providers & Application Developers: Build multi-tenant B2B and B2B2C applications with Keycloak Organizations feature, enabling customers to manage their own users, authentication methods, and security policies within isolated realms. Secure REST APIs with OAuth 2.0 tokens and implement fine-grained authorization using role-based access control. DevOps & Platform Teams: Protect internal tools, CI/CD pipelines, monitoring dashboards, and administrative interfaces with MFA and SSO, while leveraging identity brokering to allow authentication via GitHub, Google, or Azure AD. Use Keycloak's REST API to automate user provisioning and deprovisioning as part of infrastructure-as-code workflows. Customer Identity Management (CIAM): Enable social login for customer-facing applications with one-click integration for Google, Facebook, Twitter, GitHub, and other providers, while maintaining control over user data and compliance with GDPR, HIPAA, and PCI DSS requirements.

Key Features

• Single Sign-On (SSO) and Single Logout across all applications with one authentication
• OpenID Connect, OAuth 2.0, and SAML 2.0 protocol support for broad compatibility
• Multi-factor authentication (MFA) with OTP, WebAuthn, and custom authenticators
• Identity brokering with external providers (Google, Facebook, GitHub, Azure AD, custom OIDC/SAML)
• User federation with LDAP and Active Directory for centralized user management
• Role-based access control (RBAC) with fine-grained permissions and group management
• Admin console for comprehensive management of users, realms, clients, and security policies
• User account console for self-service profile management, password changes, and 2FA setup
• Custom theme support for branding login pages, emails, and user-facing interfaces
• Session management with configurable timeouts, token expiration, and revocation
• RESTful Admin API for automation, scripting, and integration with external systems
• Multi-tenancy with isolated realms for managing separate user bases and configurations
• Password policies, brute force detection, and security event logging
• Built-in support for compliance with GDPR, HIPAA, and PCI DSS requirements

Why deploy Keycloak on Hostinger VPS

Deploying Keycloak on Hostinger VPS gives you complete control over your organization's identity infrastructure without the recurring costs and vendor lock-in of cloud IAM services. With dedicated VPS resources, Keycloak can handle thousands of concurrent authentication requests with sub-second response times, ensuring a seamless login experience for users. You maintain full ownership of sensitive user data, authentication logs, and session information, meeting data residency requirements for regulated industries and ensuring compliance with GDPR, HIPAA, and other privacy regulations. The PostgreSQL database provides production-grade data persistence with ACID guarantees, while the isolated VPS environment eliminates concerns about multi-tenant security vulnerabilities present in shared SaaS offerings. Self-hosting Keycloak on Hostinger VPS enables unlimited users, realms, and authentication requests without per-user or per-authentication pricing, making it cost-effective for growing organizations. For teams building internal tools, customer-facing applications, or API-driven platforms that require enterprise-grade authentication, authorization, and user management, Keycloak on VPS delivers the security, performance, and flexibility that cloud-based alternatives cannot match at this price point.