George Thomas

George Thomas

IAM Engineer at Skycloak

George is an IAM engineer with 23+ years in software engineering, including 14+ years specializing in identity and access management. He designs and modernizes enterprise IAM platforms with deep expertise in Keycloak, OAuth 2.0, OpenID Connect, SAML, and identity federation across cloud and hybrid environments. Previously at Trianz and a long-term contributor to Entrust IAM product engineering, George authors Skycloak's technical Keycloak tutorials.

21 articles published LinkedIn
Keycloak Identity and Access Management OAuth 2.0 OpenID Connect SAML Identity Federation IAM Architecture SSO

Articles by George Thomas

Attribute mapper

Attribute Mapping when using Keycloak as a SAML SP

3 min read

Learn how to map SAML user attributes like email and name from Okta into Keycloak when using Keycloak as a…
sequence of request

Using Keycloak Identity Brokering to Add GitHub Social Login

4 min read

Learn how to configure GitHub as an identity provider in Keycloak using identity brokering for seamless social login with Skycloak…
title

Configuring Keycloak as a SAML Service Provider

4 min read

Step-by-step guide to configure Keycloak as a SAML Service Provider with Okta as the IdP using Identity Brokering for seamless…
Passkey as second factor

Keycloak WebAuthn: Enabling Passkeys for 2FA

3 min read

Step-by-step guide to configuring Keycloak WebAuthn passkeys as a second-factor authentication method using the default browser flow.
Passkey login

Keycloak WebAuthn Passwordless with Passkeys

3 min read

Learn how to configure Keycloak for passwordless authentication using WebAuthn passkeys with FIDO2 standards for phishing-resistant login.
Multi-tenancy

Multitenancy in Keycloak Using the Organizations Feature

4 min read

Learn how to implement multitenancy in Keycloak using the Organizations feature to link external identity providers and streamline B2B authentication.
Attribute

Using Custom User Attributes in Keycloak OIDC Tokens

4 min read

Learn how to add custom user attributes to Keycloak OIDC tokens and map them to your client application. Includes Spring…
Attribute mapping from external IDP

Attribute Mapping in Keycloak During OIDC Identity Brokering

4 min read

Learn how to map user attributes like email and phone number in Keycloak during OIDC identity brokering with external providers…
Request flow

Secure Your Spring Boot REST API with Keycloak Token

6 min read

Secure your Spring Boot REST API using Keycloak Client Credentials Grant with OAuth2 Resource Server and role-based access control.

Restrict Keycloak Clients to Specific Users

4 min read

Learn how to restrict Keycloak client access to specific users using client roles, custom authentication flows, and group-based access control.
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