Identity and Access Management (IAM) is a cornerstone of modern IT, ensuring secure and seamless access to applications and resources across on-premises and cloud-based environments. Technologies like SAML 2.0, OAuth, OpenID Connect (OIDC), and Single Sign-On (SSO) provide standardized protocols for authentication and authorization, while platforms like Okta, Microsoft Entra ID, PingIdentity (including PingFederate), ForgeRock, and Salesforce SSO integrate these protocols with LDAP and other systems. This blog explores these technologies, their roles in IAM, and how leading platforms enable secure access in both on-premises and cloud environments.
What is Identity and Access Management (IAM)?
Identity and Access Management (IAM) is all about making sure the right people have the right access to the right resources securely, and at the right time. It’s a blend of policies, processes and technology that helps organizations protect their systems while keeping things easy and efficient for users. From logging in to managing permissions, IAM keeps the balance between security and usability.
Here are its key components:
Authentication (AuthN)
Think of this as the “prove who you are” step. Authentication verifies a user’s identity through methods like passwords, biometrics, or multi-factor authentication (MFA), ensuring only legitimate users get in.
Authorization (AuthZ)
Once your identity is confirmed, authorization decides “what you can do.” It sets the permissions and access levels like which systems, apps, or data you can use - based on your role or requirements.
Identity Governance
This is about managing the bigger picture, overseeing digital identities, user roles and access policies across the organization. It ensures compliance, boosts security and keeps operations running smoothly.
Single Sign-On (SSO)
SSO simplifies life by letting you log in once and then access multiple applications or systems without re-entering credentials every time. One login, many doors opened securely.
Core IAM Protocols and Standards
SAML 2.0 (Security Assertion Markup Language)
SAML 2.0 is an XML-based standard that makes it possible for organizations to provide secure, seamless sign-ins across different applications. It’s a go-to choice for enterprise Single Sign-On (SSO). With SAML, you can log in once through an Identity Provider (IdP) and then access multiple platforms, like Salesforce or Microsoft 365 - without having to log in again.
How SAML Works
IdP-Initiated SSO
Here, you start by logging into the Identity Provider (like Okta). From there, you pick the app you want to use. The IdP sends a signed SAML “ticket” (an XML document) to the Service Provider (SP), giving you access instantly - no need to log in again.
SP-Initiated SSO
In this flow, you begin at the Service Provider (say, an app you want to access). The app redirects you to the Identity Provider to log in. Once verified, the IdP sends back a signed SAML assertion to the SP and you’re in.
Assertions
Assertions are the SAML “packets” that carry important details, like your authentication status, user attributes (email, role) and access permissions. The Service Provider uses this information to decide what you can access.
Benefits
Enterprise SSO
Say no to juggling multiple logins. Enterprise SSO gives you secure, one-click access to all your web-based tools like Salesforce, Workday and more; making life easier and cutting down on login fatigue.
Security
Your login credentials stay with the Identity Provider and are never shared with the applications you use. This helps reduce the risk of phishing attacks or stolen passwords, keeping your accounts safer.
Interoperability
Works effortlessly with both on-premises systems (like Active Directory) and cloud-based platforms, ensuring a smooth, unified identity experience - no matter where your apps live.
Limitations
- Designed mainly for browser-based apps doesn’t work natively with mobile apps or APIs.
- Can be trickier to set up compared to simpler protocols like OIDC.
Use Case
An employee logs into Okta (Identity Provider) once, and then hops into Salesforce (Service Provider) without having to log in again, thanks to SAML verifying who they are and what they can access.
OAuth 2.0
OAuth 2.0 is like a secure permission slip - it lets third-party apps access certain resources on your behalf without ever giving them your actual login credentials. It’s the standard choice for API authorization and delegated access in today’s digital world.
How OAuth Works
Authorization Grant
You give an application permission to access something you own for example, allowing a mobile app to read your Google Contacts.
Access Token
Once you approve, the authorization server (like Google) hands the application a special access token.
Resource Access
The application then uses this token to fetch the data it needs through an API no password sharing required.
Benifits
- Secure Delegation: Lets applications access resources without ever revealing your login credentials.
- API-Friendly: Perfect for mobile apps, APIs, and service-to-service communication.
- Scalability: Designed to handle large, distributed systems with ease.
Limitations
- Handles authorization only, not authentication so you’ll need OIDC if you also want to verify user identity.
- Managing tokens can get complicated in bigger, more complex systems.
Use Case
When a system needs to authorize actions without knowing the user’s password for example, granting a third-party app access to your data it uses OAuth 2.0. If user identity verification is also needed, it pairs with OIDC.
OpenID Connect (OIDC)
OIDC builds on OAuth 2.0, adding an identity layer using JSON Web Tokens (JWTs). It’s the standard way to authenticate users across web, mobile and API-based applications while keeping things secure and consistent..
How OIDC Works
OIDC builds on OAuth 2.0 by adding an ID token (in JWT format) that carries user details like name and email.
Here’s the flow:
- The user signs in through an OpenID Provider (OP), such as Google.
- The OP redirects the user back to the application with both an ID token (to confirm who they are) and an access token (to allow data access).
The application verifies the ID token for authentication and uses the access token to fetch the required resources.
Benefits
- Modern SSO: Works seamlessly for web, mobile and API-based apps.
- Lightweight: JWTs are smaller and faster to process compared to SAML’s XML assertions.
- Social Logins: Enables quick sign-ins like “Log in with Google” or “Log in with Facebook.”
Limitations
- Not as established in traditional enterprise environments as SAML.
- Requires knowledge of OAuth 2.0 for proper setup.
Use Case
A mobile app uses OIDC to let users log in with Google. The app gets a JWT to confirm the user’s identity and an access token to pull profile information without ever asking for a password.
Single Sign-On (SSO)
SSO lets you log in once and then access multiple applications without having to re-enter your credentials each time. It works with protocols like SAML, OIDC, or LDAP and is supported by providers such as Okta, Entra ID, and PingIdentity.
Benefits
- Better User Experience: Cuts down on repeated logins, reducing fatigue and boosting productivity.
- Stronger Security: Centralizes authentication, minimizing the spread of passwords across systems.
- IT Efficiency: Makes credential management easier and more streamlined for IT teams.
Implementation
- SAML-Based SSO: Popular in enterprises for web applications (e.g., Salesforce SSO).
- OIDC-Based SSO: Favored for mobile and consumer-facing applications.
- Hybrid SSO: Combines SAML and OIDC for organizations with mixed environments.
- Requires OAuth 2.0 expertise for setup and management.
Use Case
An employee signs into Microsoft Entra ID once and can then open Office 365, Salesforce, and Workday without logging in again using either SAML or OIDC for secure access.
LDAP (Lightweight Directory Access Protocol)
LDAP is a protocol used to store, organize, and manage user and group information—most often in on-premises environments like Active Directory. It’s a go-to for authenticating users and managing directory services in enterprise networks.
How LDAP Works
- Keeps user information (e.g., usernames, roles) in a structured, hierarchical directory.
- Verifies login credentials by checking them against this directory.
- Often pairs with Single Sign-On (SSO) solutions to give on-premises apps seamless access.
Benefits
- Centralized Management: Perfect for on-premises setups, making it easier to manage users from one place.
- Mature Standard: Trusted and widely supported in older, established systems.
- Granular Access: Allows fine-tuned control over user roles, permissions, and group memberships.
Limitations
- Not the best fit for cloud-native applications when compared to SAML or OIDC.
- Can be challenging to scale across large, distributed networks.
Use Case
An on-premises app uses LDAP to authenticate users through Active Directory, while integrating with an SSO solution to provide hybrid (on-prem + cloud) access.
Leading IAM Platforms
- Okta
Okta is a cloud-based Identity and Access Management (IAM) platform that delivers Single Sign-On (SSO), Multi-Factor Authentication (MFA) and lifecycle management for both on-premises and cloud applications.
Features
- Supports SAML 2.0, OIDC and OAuth for SSO and API-level access.
- Integrates with Active Directory, LDAP and popular SaaS apps like Salesforce and Workday.
- Offers a developer-friendly API and pre-built integrations through the Okta Integration Network.
Use Case
A company uses Okta to provide SSO for its Salesforce and Microsoft 365 accounts leveraging SAML for secure web app access, OIDC for mobile apps and MFA to ensure stronger protection for all logins.
2. Microsoft Entra ID
Microsoft Entra ID (formerly Azure AD) is a cloud-based Identity and Access Management (IAM) solution built to work seamlessly with Microsoft 365 and Azure, while supporting both on-premises and cloud environments.
Features
- Supports SAML 2.0, OIDC, and OAuth for federated Single Sign-On (SSO).
- Integrates with Active Directory using Entra Connect for hybrid deployments.
- Provides automation capabilities via PowerShell cmdlets and the Microsoft Graph API.
- Enhances security with conditional access and multi-factor authentication (MFA).
Use Case
A business uses Entra ID to enable SSO for Microsoft 365. It syncs users from on-premises Active Directory with Entra Connect and leverages SAML to give those same users secure access to third-party apps like Salesforce without extra logins.
3. PingIdentity and PingFederate
PingIdentity delivers a full-featured Identity and Access Management (IAM) platform, while PingFederate focuses on secure, federated identity management - powering SSO and API security for enterprises.
Features
- Supports SAML, OIDC and OAuth for enterprise-grade SSO.
- Offers both IdP- and SP-initiated SSO through secure SAML assertions.
- Integrates with LDAP, Active Directory and various cloud applications.
- Provides adaptive authentication and multi-factor authentication (MFA) for stronger security.
Use Case
A company uses PingFederate to enable employees to log into Salesforce and internal applications seamlessly leveraging SAML assertions and LDAP integration for on-premises directory authentication.
4. ForgeRock
ForgeRock is an open-source Identity and Access Management (IAM) platform that delivers identity governance, Single Sign-On (SSO) and secure access control for both cloud and on-premises environments.
Features
- Supports SAML, OIDC and OAuth for federated identity.
- Integrates with LDAP and Active Directory for hybrid setups.
- Offers identity orchestration and self-service portals for users..
- OpenAM provides enterprise SSO for both legacy and modern cloud applications.
Use Case
A healthcare provider uses ForgeRock to unify access for both on-premises and cloud applications leveraging SAML for secure web-based access and OIDC for mobile patient portals.
5. Salesforce SSO
Salesforce supports Single Sign-On (SSO) both as an Identity Provider (IdP) and as a Service Provider (SP), making it easy to integrate with external IdPs for smooth, secure access to its CRM platform.
Features
- Works with SAML 2.0 and OIDC for SSO.
- Integrates seamlessly with IdPs like Okta, Entra ID, or PingFederate.
- Can act as an IdP itself, enabling SSO for other connected applications.
- Supports Just-in-Time (JIT) provisioning, automatically creating user accounts during the SSO process.
Use Case
A company uses Salesforce with Entra ID through SAML integration. Employees log in with their corporate credentials and instantly access Salesforce without needing to sign in again.