Entra ID Single Sign-On

Microsoft Entra ID (formerly Azure Active Directory) is Microsoft’s enterprise-grade cloud identity platform, and Single Sign-On (SSO) is one of its most powerful capabilities. SSO enables users to authenticate once and seamlessly access hundreds of cloud and on-premises applications—eliminating repeated sign-in prompts, reducing password fatigue, and strengthening the organization’s overall security posture.  As organizations modernize their identity infrastructure, Entra ID SSO serves as the cornerstone of a Zero Trust security model—centralizing access governance, enforcing conditional policies, and providing deep visibility into authentication events across the entire environment.

SSO Across Cloud and On-Premises Apps

Entra ID supports SSO for thousands of applications using modern protocols including SAML 2.0, OpenID Connect, and OAuth 2.0. Organizations can connect SaaS applications, custom-built apps, and on-premises systems through a single identity provider—giving users frictionless access while IT maintains centralized control over authentication and access policies.

We act as an extension of their IT team, responsible for day‑to‑day operations, security monitoring, incident response, and continuous optimization. Our focus is on reducing risk, improving reliability, and ensuring the environment evolves as business needs change. Rather than reactive support, we deliver proactive management, governance, and visibility—allowing clients to focus on their business while we ensure the platform remains secure, compliant, and performing as intended.

Seamless SSO for Hybrid Environments

For organizations with Active Directory-joined devices, Entra ID Seamless SSO automatically signs users in when they are on corporate-connected devices, requiring no additional configuration on the user side. This enables hybrid environments to benefit from cloud identity capabilities without disrupting existing on-premises workflows or requiring device re-enrollment.

Conditional Access Policies

Entra ID’s Conditional Access engine enforces context-aware access policies based on user identity, device compliance, location, application sensitivity, and sign-in risk. Organizations can require MFA, restrict access from unmanaged devices, or block sign-ins from high-risk locations ensuring the right people access the right resources under the right conditions.

Multi-Factor Authentication Integration

Entra ID natively integrates MFA into the SSO experience, supporting the Microsoft Authenticator app, hardware security keys, SMS, and certificate-based authentication. MFA can be enforced selectively through Conditional Access policies, balancing security requirements with user experience across different roles and risk profiles.

App Gallery with 3,500+
Pre-Integrated Applications

The Microsoft Entra App Gallery provides pre-built SSO integrations for over 3,500 SaaS applications—including Salesforce, ServiceNow, Workday, and Google Workspace—dramatically reducing the time and complexity of onboarding new applications. Organizations can also register custom applications, enabling SSO coverage across the entire application portfolio.

Identity Protection and
Risk-Based Sign-In

Entra ID Identity Protection uses machine learning to detect and respond to suspicious sign-in patterns, compromised credentials, and atypical user behaviour in real time. Risk-based Conditional Access policies can automatically block or challenge high-risk sign-in attempts, protecting the organization from credential-based attacks without requiring manual intervention by IT teams.

How Red X Carbon Does Entra ID
Single Sign-On Differently

Identity Readiness Assessment
Before Deployment

Red X Carbon begins every Entra ID SSO engagement with a structured identity readiness assessment covering Active Directory health, application inventory, existing Conditional Access gaps, and hybrid infrastructure state. This assessment produces a clear deployment scope and risk register before any configuration work begins - ensuring the project is sequenced correctly and avoiding the mid-project surprises that derail SSO rollouts.

ADFS Migration and
Hybrid Identity Expertise

Red X Carbon specializes in migrating organizations from legacy ADFS and on-premises identity providers to cloud-native Entra ID SSO, including AD Connect configuration, pass-through authentication, seamless SSO for domain-joined devices, and password hash synchronization. Our engineers have executed ADFS decommissions at enterprise scale - eliminating costly on-premises identity infrastructure without disrupting user access during the transition.

Entra ID Application Proxy for
On-Premises App SSO

For organizations with on-premises web applications that cannot be moved to the cloud, Red X Carbon deploys Entra ID Application Proxy to extend SSO to those apps without requiring a VPN—publishing them through a secure outbound connector and bringing them under the same Conditional Access policies that govern cloud applications. This gives hybrid environments a single, consistent authentication experience across their entire application estate, including legacy systems that would otherwise remain outside the identity perimeter.

Layered Conditional Access
Architecture

Rather than deploying a handful of basic policies, Red X Carbon designs a structured, layered Conditional Access framework built around named locations, device compliance states, sign-in risk levels, and application sensitivity tiers. This delivers a defensible, Zero Trust-aligned access control model that can be explained to auditors, extended as the environment grows, and maintained by internal teams without requiring a security architect on retainer.

Legacy Authentication Identification and Remediation

Deploying Conditional Access and MFA only closes part of the attack surface if legacy authentication protocols remain active—Basic Auth and NTLM bypass both entirely, leaving credential-based attacks unimpeded. Red X Carbon conducts a structured legacy authentication audit using Entra ID sign-in logs to identify every client, application, and protocol still using legacy auth, then executes a phased remediation that blocks legacy protocols at the policy level without disrupting users who have legitimate modern auth paths available. This is one of the highest-impact security steps in any identity hardening engagement and one that most organizations defer indefinitely without a structured approach.

Sign-In Monitoring and Identity Audit Log Configuration

Most organizations complete an SSO deployment without configuring any visibility into what is actually happening at authentication time. Red X Carbon configures Entra ID diagnostic settings to route sign-in logs and audit logs to a Log Analytics workspace or existing SIEM, and establishes alerting on high-value authentication events—including impossible travel, sign-ins from unfamiliar locations, legacy auth attempts post-remediation, and high-risk user sign-ins flagged by Identity Protection. This ensures the identity environment has operational observability from day one, rather than leaving security teams blind to authentication anomalies until an incident surfaces them.