How should security teams centralise identity governance in a fragmented IT environment?

Why This Matters for Security Teams

Centralising identity governance is not about forcing every application into one product. It is about eliminating contradictory identity state across HR, IAM, PAM, cloud platforms, and endpoint tools so access can be approved, reviewed, and revoked from one source of truth. That matters most in fragmented environments, where a user may be disabled in one system but remain active in another long enough to be abused.

The operational risk is amplified for non-human identities, which often outnumber human users by 25x to 50x in modern enterprises according to the Ultimate Guide to NHIs. The same research shows only 5.7% of organisations have full visibility into service accounts, and 80% of identity breaches involved compromised non-human identities such as service accounts and API keys. The NIST Cybersecurity Framework 2.0 reinforces the need for governed identity state, not scattered admin ownership.

In practice, many security teams encounter stale access and orphaned identities only after a failed audit, a breach, or a rushed offboarding event, rather than through intentional governance design.

How It Works in Practice

Identity governance works best when one system is designated as authoritative for identity state, then every other platform consumes that state through controlled integration. For human identities, that usually means HR or the identity governance platform drives joiner, mover, and leaver workflows. For non-human identities, the same principle applies, but the source of truth may need to include application owners, secrets inventory, device inventories, and cloud control planes.

The practical pattern is to separate identity decisions from local administration. Security teams define who or what should have access, for how long, and under which approval path. Connected systems then enforce those decisions through provisioning, deprovisioning, recertification, and logging. This is where the NHIMG Lifecycle Processes for Managing NHIs guidance is especially useful: offboarding, rotation, and ownership mapping need to be explicit, not implied.

• Use one authoritative identity registry for humans and a clearly governed registry for NHIs.
• Automate onboarding and offboarding through workflow, not ticket chasing.
• Synchronise access reviews with device, application, and secrets inventories.
• Keep a single audit trail that shows who approved access, when it was granted, and when it was revoked.

For fragmented estates, this often means integrating IAM, PAM, MDM, cloud platforms, and secrets managers into a shared control plane, while retaining system-specific enforcement at the edge. The State of Non-Human Identity Security notes that 85% of organisations lack full visibility into third-party vendors connected via OAuth apps, which is exactly why central governance must include external connections, not just internal directories. These controls tend to break down when local teams create identities directly in SaaS, cloud, or CI/CD systems because the authoritative record and the live access state drift apart.

Common Variations and Edge Cases

Tighter identity governance often increases administrative overhead, requiring organisations to balance standardisation against local operational speed. That tradeoff is real in mergers, multi-cloud estates, and heavily outsourced environments, where no single team owns every platform.

Current guidance suggests centralising the decision authority, not necessarily the execution layer. In other words, a business unit may still manage day-to-day administration in its own tools, but approvals, policy, lifecycle events, and audit evidence should roll up to one governance model. This is especially important when service accounts, API keys, and vendor connections are involved, because NHIs often lack the visible ownership and recertification discipline applied to human users.

There is no universal standard for this yet, but best practice is evolving toward federated control with central policy. For example, identity teams may maintain a master record, while cloud and SaaS platforms enforce local permissions derived from that record. That approach is easier to defend if it is supported by the right evidence and lifecycle records in the Regulatory and Audit Perspectives section of NHIMG’s NHI guidance. It also aligns with zero trust thinking, where access is continuously evaluated rather than assumed from network location alone.

Fragmented environments tend to resist central governance when integrations are manual, ownership is unclear, or systems cannot emit reliable identity events.

Related resources from NHI Mgmt Group

• How should security teams evaluate Centrify alternatives for identity governance?
• How should security teams compare Microsoft 365 admin tools with broader identity governance platforms?
• How should security teams connect asset discovery to identity governance?
• How do identity and security teams apply the same lessons to governance data?