What Is Identity Governance and Administration (IGA)?

Multicloud adoption and rapid AI rollout have multiplied the number of identities enterprises must track, and at a rate faster than manual processes can manage. The ThreatLabz 2026 AI Security Report found that enterprise AI and ML transactions grew 91% year over year. Each new AI tool, agent, and integration adds identities and entitlements, and manual onboarding, offboarding, and role changes can’t safely govern that sprawl.

Top 4 Human Errors in Manual Provisioning

Manual provisioning most often fails through orphaned accounts, privilege accumulation, overprivileged default templates, and missing audit trails. Each error has the same root cause: organizations rely on people instead of automation to manage identity.

• Orphaned accounts left active: Departing employees often keep system access for days or weeks because manual offboarding depends on someone remembering to revoke every account.
• Accumulated privileges during role drift: Employees who change roles or departments typically keep old permissions alongside new ones because there isn’t a process to remove access tied to a job they no longer hold.
• Overprivileged default templates: Teams often grant broad access up front to avoid repeated help desk requests, leaving employees with more permissions than their jobs require.
• Missing audit trails for compliance: Manual approvals tracked across emails and spreadsheets rarely produce a centralized record, so organizations struggle to document access decisions during regulatory audits.

The core objective of IGA is to give the right people the right access to the right resource, at the right time, for the right reason. IGA meets that standard by merging two disciplines:

• Identity governance provides visibility into user rights, audits how those rights are used, and enforces separation of duties, so organizations know exactly who holds access and whether they still need it.
• Identity administration handles the operational work behind each account across its full life cycle, from provisioning at onboarding and adjusting access during role changes to deprovisioning at departure.

Identity governance defines and audits what access should look like across your organization, while identity administration puts the access in place by provisioning, updating, and removing accounts. Governance sets policy and provides oversight; administration executes it. Both disciplines work together inside IGA platforms, but they serve distinct functions in managing digital identity.

Governance is the oversight layer. It audits who holds which permissions, flags conflicts that violate separation of duties, and reviews whether existing access is needed. These rules and checks keep an organization’s identity program accountable, especially when regulators or auditors request proof of compliance.

Administration is the execution layer. It provisions new accounts, updates permissions when employees change roles, and deprovisions access when they leave so that orphaned accounts don’t become security vulnerabilities. These operational tasks turn governance decisions into action inside your systems.

Neither discipline works well alone. Governance without administration produces policy with no way to enforce it. Administration without governance moves fast but has no oversight to catch mistakes or drift.

Identity security posture management (ISPM) is the discipline of continuously monitoring the risk state of an organization’s entire identity estate across cloud, SaaS, and on-premises systems. Periodic access reviews confirm that access was approved at some point. ISPM evaluates whether that access is still safe, catching drift, misconfigurations, and exposure before attackers find them.

Standard IGA programs excel at approvals and periodic reviews, but they weren’t designed to catch what drifts between review cycles. ISPM identifies the risks that often go unnoticed until an audit or an incident surfaces them:

• Unrotated service account credentials: Service accounts that keep the same password or secret for months or years give an attacker a long window to exploit a leaked credential.
• Shadow admins created through role nesting: This includes users who inherit administrative privileges indirectly through group memberships or nested roles, without ever being formally granted admin access.
• Stale OAuth tokens with standing access: These tokens remain valid long after the application or integration that requested them is no longer in active use.
• Excessive blast radius from overprovisioned machine identities: When non-human identities have broader permissions than their function requires, a threat actor can use a single compromised credential to reach a large section of the enterprise environment.

Identity is never static. Every employee moves through distinct stages, and each stage carries its own access risk.

The Joiner-Mover-Leaver (JML) Identity Life Cycle

1. The joiner, or onboarding, stage covers a new employee’s first days.
   
   Automated user provisioning grants an initial set of basic accounts and role-based access upon employment, based on predetermined job templates rather than ad hoc provisioning. This allows the new employee to start work sooner and eliminates the guesswork that can create over-privileged accounts from the start.
2. The mover, or transition, stage handles what happens when an employee changes roles or switches departments.
   
   A well-run IGA process revokes the access an employee no longer needs the moment their role changes. Without it, permissions accumulate with every position a person holds, and that accumulated access is exactly what attackers look for.
3. The leaver, or offboarding, stage is the final and most urgent step.
   
   When an employee leaves, every account tied to their identity should be disabled and deprovisioned across all systems. Delayed offboarding leaves orphaned accounts standing open, and attackers know how long manual removal usually takes.

Segregation of Duties (SoD) and Policy Enforcement

Segregation of duties (SoD) is a policy control that prevents any one user from holding two conflicting sets of permissions. The purpose of SoD is to protect against both malicious use and unintended errors through internal checks.

The most well-known application of SoD occurs in finance departments. For example, the person initiating a purchase order should not be the same person approving payment for the order. When one person controls both steps, the organization loses the check that would have caught the problem, whether it was deliberate fraud or an honest mistake.

IGA engines enforce these policies at scale. They continuously scan directories and access records, flagging SoD violations as they appear instead of waiting for an annual audit. That closes the window an attacker could otherwise exploit.

IGA governs non-human identities (NHIs) and AI agents by applying the core principles it uses for employees, including life cycle management and periodic access review. Because NHIs have no HR event to trigger changes, IGA relies on automated policies instead. NHIs now outnumber human identities in most enterprises, yet they rarely receive the same scrutiny as new employees.

In practice, every service account and API key needs a documented owner, a defined purpose, and a scheduled credential rotation. AI agents raise the stakes further because they can request access or take action independently. Governance programs increasingly require agents to operate under scoped, time-bound permissions rather than broad standing access, with every action logged for review.

Integrations between identity governance platforms and zero trust enforcement now extend inline policy to non-human and agentic identities. These integrations give security teams a single control plane for every identity type that accesses the enterprise, human or non-human.

IGA sets access policy; IAM and PAM enforce it.

Most organizations run IGA, IAM, and PAM side by side, and the three overlap enough to cause confusion. All of them address the same underlying question of who can access what. The difference is when each one is invoked and what it inspects.

How IGA Complements Identity and Access Management (IAM)

IAM governs the moment someone tries to get in. Using controls like single sign-on or multifactor authentication, it confirms that the person entering a password or approving a push notification is who they claim to be. IAM is the checkpoint. IGA decides who should be on the list in the first place.

A login can work under IAM even when the access it grants no longer makes sense. Consider an employee who transferred departments six months ago but still holds permissions from their old role. IGA is what pinpoints that discrepancy. Its purpose is to review entitlements on an ongoing basis and ask whether access still fits the person holding it, a question IAM was never designed to answer.

The Intersection With Privileged Access Management (PAM)

Admin accounts and infrastructure credentials pose a much higher security risk than standard user accounts, since compromising one gives an attacker far greater access and control. PAM exists specifically to mitigate that risk. It acts as a credentials vault, storing and rotating high-value account credentials so they are never held directly by the user.

IGA operates on a level above PAM. Before PAM grants a session, someone has to decide that the requesting user is eligible for privileged access in the first place. The IGA function governs that eligibility decision, while also auditing privileged grants after the fact, checking whether anyone has admin rights they no longer need.

Most attackers don’t break in. They log in using credentials that governance failed to revoke or review. That failure plays out through a few predictable patterns.

AI Compresses the Credential-To-Compromise Timeline

Stolen credentials remain a leading entry point for enterprise breaches, but AI has made that entry point far more dangerous. Once inside with a valid login, an attacker moves through the network as an authenticated user, not as a malicious intruder. AI now lets that attacker iterate on reconnaissance and lateral movement at machine speed, compressing a process that once took days into minutes.

ThreatLabz researchers found that 61% of organizations encountered AI-enabled attacks in the past 12 months, yet only 11% can restrict a compromised session to a single application (ThreatLabz 2026 VPN Risk Report). That enforcement lag turns one stolen credential into broad internal access.

A few identity gaps make this risk worse:

• Non-human identities such as API keys and service tokens now outnumber human accounts in most enterprises, yet they rarely receive the access reviews applied to people.
• Hardcoded API keys left in a code repository can lend the same reach as a stolen employee login, and this access can often go unnoticed for months.
• Delayed offboarding leaves departed employee credentials active, creating orphaned accounts that sit exposed until someone finds them.

The speed of modern attacks leaves little room for slow processes. An employee offboarding process that takes hours to revoke access gives an AI-accelerated attacker ample time to find a pathway into the enterprise’s systems.

Zero trust is the strongest defense against this kind of lateral movement, since it never grants broad network reach based on a single valid login. Every request gets evaluated on its own, which contains a compromised session to the one application it touched rather than the entire network. It’s no surprise that 84% of organizations are now planning or actively transitioning to a zero trust architecture, up from 78% just two years ago (ThreatLabz 2026 VPN Risk Report).

Continuous Access Certification and Audit Readiness

Access certification works best as a repeatable cycle.

1. A business manager reviews an employee’s current access rights on a set schedule.
2. The manager confirms which permissions still make sense and flags any that don’t.
3. Flagged access gets revoked, and the decision is logged automatically.
4. The IGA platform centralizes every review, approval, and revocation into a single audit trail.

That trail becomes your best asset during a compliance review. Regulations like SOX, HIPAA, and GDPR all expect proof that access controls exist and function as intended. When an auditor asks who approved access to a financial system last quarter, a centralized log gives you a clear answer in minutes.

Verification is pointless if you’re verifying access that shouldn’t exist in the first place. That’s a blind spot that hinders most zero trust rollouts. Organizations invest heavily in continuous authentication, then apply those checks to entitlements nobody has reviewed in months.

IGA provides visibility into those blind spots. It defines the dynamic boundaries of least privilege across multicloud and on-premises environments. Zero trust enforces those boundaries granularly by checking every connection against the policy IGA has set.

The two are mutually reinforcing. IGA without zero trust produces an accurate access map, but nothing gets enforced in real time. Zero trust without IGA verifies identity constantly while still trusting outdated, over-provisioned permissions.

Static Compliance vs. Continuous Zero Trust Visibility

Traditional identity governance runs on a quarterly rhythm. A manager reviews an access list, signs off, and the review sits untouched until the next cycle. That cadence is too slow for cloud-native enterprises, where roles shift, and AI agents create new service accounts daily.

Zero trust replaces the static approach with active, contextual visibility. Access gets evaluated at the moment of connection, factoring in device posture, location, and behavior alongside the entitlement itself. A permission that looked appropriate last quarter can get flagged and restricted the moment its context changes, well before the next scheduled audit catches it.

Risks of the Verified but Over-Privileged User

Strong authentication creates a false sense of security without governance. A user can pass every identity check a zero trust architecture requires, such as a correct password, a valid multifactor prompt, or a healthy device, and still hold access from three roles ago.

IAM confirms this is the right person. It cannot confirm this is the right access. That combination is exactly what attackers look for, since a verified, over-privileged account moves through the network without triggering a single authentication alert.

Integrating IGA decisions directly into a cloud-native zero trust policy engine removes that gap. When IGA revokes an entitlement or flags a segregation of duties violation, the policy engine enforces that change immediately at the connection level, not in a compliance dashboard alone. This shrinks the pathways available for lateral movement and reduces your organization’s attack surface, even after an intruder clears the front door.

Successful IGA implementation comes down to a handful of practices that automate governance instead of leaving your staff to chase it manually.

Step 1: Connect the Identity Life Cycle to Your HR System

Your human resources information system (HRIS) should be the single source of truth for all identity decisions, so connect your IGA engine to it directly. Any change in employment status (i.e., a new hire, promotion, or termination) then triggers the correct JML workflow, closing the gap between what HR knows and what your access controls enforce.

Step 2: Enforce Least Privilege With Role-Based Access Control

Role-based access control (RBAC) provides a consistent baseline for managing access instead of relying on ad hoc approvals. Establish access templates based on each employee’s job function, and use them to automatically set access levels for new hires and role changes, enforcing least-privileged access by default. This also removes a significant share of the manual requests that typically cause delays at your help desk.

Step 3: Run Continuous Micro-Certifications on High-Risk Access

Allowing risky entitlements to remain unreviewed until the next quarter’s review cycle creates a window of opportunity for attack. Run continuous micro-certification scans on your riskiest entitlements, such as admin rights and access to financial systems. Managers then confirm that high-risk access is still warranted on a rolling basis, not once a quarter.

Step 4: Scan for Shadow Accounts and Undocumented Permissions

“Shadow accounts hang around like forgotten keys under the corporate doormat,” according to Nishant Kumar, a Senior Manager of Product Marketing at Zscaler.

Combined with orphaned service permissions, shadow accounts and undocumented permissions can quickly build up in multicloud environments before IT teams recognize they exist. Schedule automated discovery scans across your entire environment to surface shadow accounts, orphaned permissions, and access that was granted once and never reviewed. Identifying these vulnerabilities prior to an incident will greatly reduce the risk of exposure.

Step 5: Tie IGA Into Your Zero Trust Access Framework

Identity governance is most effective when it feeds directly into how access gets enforced. Connect your IGA platform to zero trust access controls so that entitlement changes translate into immediate policy updates. This minimizes the time between deciding someone shouldn’t have access and actually stopping them from using it.

NHIs now outnumber human identities by an average of 144 to 1 in cloud-native environments. That ratio keeps climbing as organizations deploy more automation and AI agents. Because legacy IGA programs were built around human employees, ungoverned NHIs are becoming a serious liability.

AI agents compound the risk. An agent can request access, chain permissions across systems, and take action on its own, often faster than a human reviewer could catch a problem. Governing these identities requires the same discipline applied to employees but enforced at machine speed rather than on a quarterly review cycle.

Practical governance for 2026 means treating every NHI and agent as a first-class identity in your IGA program. That includes:

• Scoped, time-bound permissions instead of standing access
• Continuous discovery to catch new agents as soon as they appear
• Integration with your zero trust enforcement layer, so policy changes take effect immediately rather than at the next scheduled review

Zscaler enforces governance decisions everywhere your users, devices, and workloads connect. The Zscaler Zero Trust Exchange™ platform integrates with leading IGA and IAM partners like SailPoint, Saviynt, and Okta, translating their entitlement decisions into real-time access policy across Zscaler Internet Access (ZIA) and Zscaler Private Access (ZPA).

This means when your IGA platform revokes an entitlement or flags a segregation of duties violation, that change takes effect immediately at the network layer, not just in a compliance dashboard. Zscaler Privileged Remote Access extends this same enforcement to privileged sessions, brokering and terminating access in real time alongside your governance partner.

The platform also extends Zero Trust Network Access (ZTNA) to non-human identities and AI agents, giving you one control plane for every identity that touches your enterprise.

To learn more, request a demo.