If you’re responsible for securing your organization’s systems, you’ve almost certainly run into both IAM and PAM — and the question of how they differ. While Identity and Access Management (IAM) and Privileged Access Management (PAM) both deal with controlling who can access what, they operate at different levels and solve different problems. Confusing the two can leave serious security gaps. This article breaks down what each one does, where they overlap, and how to decide which your organization needs.
What Is IAM (Identity and Access Management)?
IAM is the broad framework of policies, processes, and technologies used to manage digital identities and control access to systems and resources across an organization. It answers a fundamental question: who is this user, and what are they allowed to do?
IAM applies to all users — employees, contractors, customers, partners, and increasingly, non-human identities like service accounts and applications. The goal is to ensure that every user has exactly the access they need to do their job, and no more.
Core IAM capabilities
- Authentication: Verifying a user’s identity through passwords, multi-factor authentication (MFA), single sign-on (SSO), or certificates.
- Authorization: Determining what an authenticated user is permitted to access based on roles, policies, or attributes.
- User lifecycle management: Provisioning and deprovisioning accounts as employees join, change roles, or leave the organization.
- Role-based access control (RBAC): Assigning permissions based on job function rather than on an individual basis.
- Audit and compliance reporting: Maintaining logs of access events to support security investigations and regulatory requirements.
IAM is foundational security infrastructure. Without it, organizations have no consistent, scalable way to manage who accesses what — and cleaning up after a breach or failed audit becomes exponentially harder.
What Is PAM (Privileged Access Management)?
PAM is a specialized subset of access management focused specifically on accounts that hold elevated or administrative privileges. These are the accounts that can make system-wide changes, access sensitive data stores, modify security configurations, or install software. Think domain admins, root accounts, database administrators, and service accounts with broad permissions.
PAM answers a more targeted question: how do we control, monitor, and secure the most powerful accounts in our environment?
Privileged accounts are the primary target in the majority of serious breaches. An attacker who compromises a standard user account has limited reach. An attacker who compromises a privileged account can move laterally, escalate access, exfiltrate data, or cause catastrophic damage. PAM exists specifically to reduce that risk.
Core PAM capabilities
- Privileged account discovery: Identifying all privileged accounts across the environment, including dormant and shared accounts.
- Credential vaulting: Storing privileged credentials in a secured, encrypted vault rather than in spreadsheets or shared files.
- Just-in-time (JIT) access: Granting elevated access only when needed, for a defined time window, then revoking it automatically.
- Session recording and monitoring: Recording privileged sessions so that every action taken with admin credentials is auditable.
- Least privilege enforcement: Reducing standing privileges so that even administrators don’t have more access than a specific task requires.
IAM vs PAM: Key Differences
The simplest way to understand the relationship: PAM is a specialized discipline within the broader IAM landscape. But in practice, they’re often separate tools, separate teams, and separate budgets. Here’s how they differ across the dimensions that matter most.
| Dimension | IAM | PAM |
|---|---|---|
| Scope of users | All users — employees, contractors, customers, service accounts | High-privilege accounts only — admins, root users, service accounts with elevated rights |
| Primary goal | Manage identity and enforce appropriate access for the entire workforce | Secure, monitor, and audit the most sensitive access pathways |
| Risk focus | Unauthorized access from any user, including external threats and insider misuse | Catastrophic damage from compromised or misused admin credentials |
| Access model | Role-based, attribute-based, or policy-driven access | Just-in-time, time-limited, session-based access |
| Monitoring depth | Login events, access requests, policy violations | Full session recording, keystroke logging, command-level auditing |
| Credential management | Standard password policies, MFA enforcement, SSO | Credential vaulting, password rotation, shared account management |
| Regulatory alignment | GDPR, HIPAA, SOX user access reviews | PCI DSS, SOX, NERC CIP privileged access controls |
| Typical tools | Okta, Microsoft Entra ID, Ping Identity | CyberArk, BeyondTrust, Delinea |
Where IAM and PAM Overlap
The line between IAM and PAM isn’t always clean. Modern platforms increasingly blend capabilities from both disciplines, and some use cases sit squarely in the middle.
Service accounts and non-human identities are a good example. They’re often managed through IAM systems (provisioned as part of the directory), but because they frequently carry elevated permissions and rarely change passwords, they also fall under PAM scope. Managing them requires both IAM governance and PAM-style credential controls.
Access reviews and certification is another overlap area. IAM handles periodic reviews of all user access rights. PAM adds a layer specifically for privileged access, often with more frequent review cycles and stricter sign-off requirements.
Zero Trust architecture draws on both. A Zero Trust model requires continuous verification of every user and device before granting access (IAM) and applies the principle of least privilege especially to high-risk accounts (PAM). Implementing Zero Trust without both disciplines leaves gaps.
Do You Need IAM, PAM, or Both?
The honest answer for most organizations of any meaningful size: you need both, but you may not need to implement them simultaneously.
Start with IAM if your organization lacks a consistent identity foundation — users are manually provisioned, access isn’t tied to roles, there’s no MFA, or offboarding is unreliable. IAM gives you the baseline. Without it, PAM has nothing to build on because you don’t have a clean view of who your users are in the first place.
Prioritize PAM if you already have reasonable IAM hygiene but your privileged accounts are a known risk — shared admin passwords, no session recording, standing access that never gets revoked, or audit findings about privileged access. In regulated industries like finance, healthcare, or utilities, PAM controls are often a compliance requirement, not just a best practice.
Build toward both as your security program matures. The organizations with the strongest access security posture run IAM and PAM in a coordinated way: IAM governs the full identity lifecycle and access request workflows, while PAM enforces strict controls on the most sensitive pathways. They share audit logs, feed into the same SIEM, and support each other’s compliance reporting.
IAM and PAM in the Context of IT Service Management
For IT teams running service desks and ITSM platforms, IAM and PAM touch daily operations more than most people realize. Access request tickets, role change approvals, account provisioning workflows, and privileged access requests all flow through service management processes.
A well-structured ITSM platform can serve as the request and approval layer for both IAM and PAM operations — standardizing how access is requested, approved, audited, and revoked. Some ITSM tools integrate directly with IAM providers to automate provisioning on ticket resolution. For privileged access, the ITSM change management process often governs when and how PAM-controlled credentials are checked out.
Tools like InvGate Service Management can handle the workflow and approval layers for access-related requests, connecting the business process side of access management with the technical controls enforced by dedicated IAM and PAM platforms.
Best Practices for IAM
- Enforce MFA across all users, not just administrators. Credential theft is the leading cause of breaches, and MFA significantly reduces that risk.
- Implement role-based access control tied to job functions, and review those roles regularly as the organization changes.
- Automate provisioning and deprovisioning through HR system integration so that accounts are created accurately on day one and disabled promptly on departure.
- Run periodic access certification campaigns to identify and remove access that’s no longer needed — particularly after role changes or project completions.
- Maintain a complete inventory of non-human identities (service accounts, API keys, application credentials) with clear ownership and expiration policies.
Best Practices for PAM
- Eliminate shared admin accounts. Every privileged user should have a named, individual account so that sessions can be attributed to a specific person.
- Vault all privileged credentials and rotate them automatically after each use or on a defined schedule.
- Implement just-in-time access so that standing privileged access is eliminated. Admins request elevation when needed, use it, and have it revoked automatically.
- Record all privileged sessions and store recordings in a tamper-evident location accessible to security and compliance teams.
- Apply the principle of least privilege even within the privileged tier — a storage admin shouldn’t have domain admin rights just because both are “admin” accounts.
Frequently Asked Questions
Is PAM a subset of IAM?
Conceptually, yes — PAM falls within the broader IAM domain because it deals with identity and access. In practice, they’re usually separate tools, separate teams, and separate budget lines. PAM goes deeper on a narrower set of accounts, while IAM provides broader coverage across all users and identities.
Can one tool handle both IAM and PAM?
Some platforms market themselves as covering both, and the convergence is increasing. However, most security practitioners still recommend purpose-built tools for each — a robust identity provider for IAM and a dedicated PAM solution for privileged credential management and session recording. The depth of controls required for privileged access typically exceeds what general IAM tools provide out of the box.
What’s the difference between IAM and PAM in terms of compliance?
IAM supports compliance requirements around user access controls, access reviews, and identity governance — relevant to frameworks like SOX, HIPAA, and GDPR. PAM addresses more specific requirements around privileged access monitoring, credential management, and audit trails, which appear in PCI DSS, SOX IT controls, NERC CIP, and similar frameworks. Many audits require evidence of both.
What is the difference between PAM and PIM?
Privileged Identity Management (PIM) is sometimes used interchangeably with PAM, but in Microsoft’s ecosystem, PIM specifically refers to just-in-time role elevation within Azure Active Directory (now Microsoft Entra ID). PAM is the broader discipline covering credential vaulting, session recording, and privileged access governance across on-premise and cloud environments. PIM is effectively one capability within the PAM discipline.
When should a small or mid-sized company invest in PAM?
Company size is less important than the number of privileged accounts and the sensitivity of the systems they access. If you have multiple people with domain admin or root access, shared admin credentials, systems containing regulated data, or audit requirements around privileged access — PAM is worth the investment regardless of headcount. Many incidents that devastate smaller organizations stem from compromised admin credentials that a basic PAM tool could have contained.
Pricing accurate as of the publish date and subject to change. Verify current pricing on each vendor’s official site before purchasing.
