How should security teams reduce identity sprawl without weakening governance?

Why This Matters for Security Teams

Reducing identity sprawl is not just a tooling cleanup exercise. When identity, access, and device controls are fragmented, teams lose the ability to answer basic governance questions: who has access, why they have it, and when it should expire. That creates duplicate entitlements, inconsistent approvals, and hidden exceptions that survive long after the original use case is gone. Current guidance from NIST Cybersecurity Framework 2.0 still points security teams toward clear asset and access governance, but in practice the challenge is less about policy intent and more about eliminating parallel control paths that drift over time.

The NHI problem makes this sharper because service accounts, API keys, OAuth grants, and automation identities often proliferate faster than human accounts. NHI Management Group research in the Ultimate Guide to NHIs notes that NHIs outnumber human identities by 25x to 50x in modern enterprises, and 97% carry excessive privileges. That scale means every duplicate workflow becomes another place for stale access to persist. In practice, many security teams encounter identity sprawl only after audit findings, credential leakage, or a failed offboarding event has already exposed the overlap between systems.

How It Works in Practice

The practical approach is to consolidate governance before consolidating tools. Start by mapping every identity source, every entitlement store, and every enforcement point, then identify where the same decision is being made twice. For example, if an application checks group membership while a PAM platform also grants time-bound elevation, one of those paths usually becomes shadow policy. A single source of truth does not mean one product for everything. It means one authoritative lifecycle and policy state that downstream tools consume consistently.

For NHIs, this usually requires linking discovery, ownership, policy, and secret lifecycle into one operational model. The Lifecycle Processes for Managing NHIs guidance is especially relevant here because duplicate identities often appear when teams create new service accounts instead of reusing governed workload identities. The control objective is to reduce redundant accounts, not to centralise every runtime credential in a single vault. Where possible, use authoritative identity records, automated joiner-mover-leaver workflows, and policy-as-code enforcement through platforms such as NIST Cybersecurity Framework 2.0 aligned governance. In mature environments, that also means removing manual exceptions from ticket queues and moving approvals into a logged, reviewable workflow.

• Inventory identities across SaaS, cloud, CI/CD, and infrastructure systems.
• Mark one source of record for ownership and lifecycle state.
• Eliminate duplicate approval paths for the same access decision.
• Use role groups or policy objects as outputs, not as competing sources of truth.
• Automate revocation so deprovisioning follows the same path as provisioning.

This guidance tends to break down in hybrid environments where legacy apps require local accounts and cannot consume central policy cleanly.

Common Variations and Edge Cases

Tighter consolidation often increases operational dependency on a small number of platforms, so teams must balance governance gains against resilience and change-control overhead. That tradeoff is real, especially when mergers, regulated workloads, or air-gapped systems are involved.

Best practice is evolving for these edge cases. Some organisations keep local enforcement in place for legacy applications, but still centralise entitlement definitions and recertification. Others separate human IAM from NHI governance entirely because the lifecycle, revocation speed, and privilege patterns are too different to share the same rules. The key is not forcing identical processes across all identity types. NHI Management Group research on the Top 10 NHI Issues shows that over-privilege and weak rotation remain common failure modes, so consolidation must improve both visibility and enforcement, not just reduce vendor count.

There is no universal standard for this yet, but the safest pattern is to retire duplicate decision points first, then consolidate storage, vaulting, and reporting once governance is stable. In highly distributed environments, that sequence matters more than the technology stack. The hardest cases are legacy systems with embedded credentials and ad hoc admin access, because they resist central policy while still creating the largest identity sprawl.

Related resources from NHI Mgmt Group

• How should security teams reduce access review fatigue without weakening governance?
• How should security teams use AI in identity governance without weakening controls?
• How should security teams reduce friction in remote identity controls without weakening security?
• How should security teams evaluate Centrify alternatives for identity governance?