They should replace overlap where the tools are only adding administrative layers, not distinct controls. The decision should be driven by whether the current stack can provide one authoritative view of identity, device posture and access enforcement. If it cannot, consolidation is a governance improvement, not just a cost decision.
When a Single Control Plane Helps, and When It Does Not
The question is not whether fewer tools are always better, it is whether the current stack is creating duplicate administration without adding distinct enforcement. A single control plane helps when identity, device posture and access decisions are being interpreted differently by separate tools, because that fractures governance and slows response. It fails when consolidation removes a control boundary you still need for containment or specialised handling.
For a practical model of consolidation, NHIMG’s Identity Convergence Guide is useful because it frames where unified identity reduces silos and where separate controls still make sense. The same logic applies to devices: a shared view is valuable only if it does not erase device-specific enforcement that identity tooling cannot replace.
That distinction matters because a control plane is only useful when it can act as the authoritative source of truth for the decisions you actually need to make. If one tool knows who the actor is, another knows whether the device is healthy, and a third knows whether access is allowed, but none can reconcile those answers consistently, the organisation is operating with administrative overlap rather than true control.
What Must Be Preserved During Consolidation
The core requirement is authoritative correlation, not aesthetic simplification. A good consolidation candidate should preserve identity lifecycle, device trust signals and access enforcement in a way that is observable and auditable, rather than merely moving the same decisions into a different console. If the new plane cannot prove why access was granted, blocked or revoked, the consolidation is superficial.
The strongest internal comparison point is the IVIP and ISPM Buyer’s Guide, which focuses on source coverage, correlation accuracy and the quality of findings. Those are exactly the measures that matter when deciding whether multiple identity and device tools can be collapsed into one operating model without losing decision fidelity.
For device-heavy environments, NHIMG’s Device and IoT Identity Guide is a useful reminder that device trust is not a cosmetic attribute. Device certificates, attestation and secure onboarding are controls in their own right, so they should only be folded into a broader plane if that plane can preserve the same trust signal and lifecycle discipline.
That is why the decision should start with control mapping. If a tool is only duplicating inventory, dashboards or workflow layers, consolidation is usually healthy. If a tool is performing unique enforcement, such as attestation-based gating, environment separation or privileged access constraints, that function needs to survive the redesign or be replaced with equal strength.
How to Judge the Operating Model Before You Merge It
Use the decision to test governance quality, not just software count. If the current stack cannot answer basic questions like which identity owns which device, which posture state is current, and which access path is active, then the environment is already too fragmented. In that case, consolidation should be treated as a control improvement programme, not a procurement swap.
IGA Buyer’s Guide is the most relevant internal reference for the governance side of that decision because it emphasises lifecycle, reviews, connectors and access governance. Use those criteria to determine whether the proposed control plane can actually reduce fragmentation across joiner-mover-leaver processes, not just centralise screens.
Where the tool estate includes identity detection or response, the ITDR Buyer’s Guide adds an important check: consolidation should improve identity context and response actions, not hide them inside a broader platform. A single plane is only better if it shortens the path from suspicious activity to containment without weakening detection depth.
What to verify: Confirm that the proposed plane can preserve the strongest current control in each area, identity, device and access, rather than averaging all three into the weakest common denominator. The right question is whether the new model can enforce policy with better clarity and fewer handoffs, not whether it can replace every logo on the procurement list.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST CSF 2.0, NIST SP 800-53 Rev 5 and CIS Controls v8 set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | GV.OV-01 — Oversight of Cybersecurity Risk | Consolidation changes governance oversight of identity, device and access controls. |
| Recommendation — Define oversight criteria for any control-plane merger and require measurable control outcomes. | ||
| NIST SP 800-53 Rev 5 | AC-6 — Least Privilege | A shared control plane must preserve least-privilege access enforcement across tools. |
| IA-5 — Authenticator Management | Consolidation often affects credential and authenticator lifecycle handling. | |
| IA-9 — Service Identification and Authentication | Identity and device consolidation can impact machine and service authentication flows. | |
| Recommendation — Retain least-privilege enforcement when replacing overlapping access tools. Verify the new plane preserves authenticator lifecycle, rotation and revocation. Ensure machine-to-machine authentication remains explicit and separately enforced. | ||
| CIS Controls v8 | CIS-5 — Account Management | Tool rationalisation must not weaken account and access administration control. |
| Recommendation — Consolidate only after confirming account governance remains complete and auditable. | ||
Practitioner Guidance
Decision rule: Consolidate when the duplicate tools are reporting, routing or reconciling the same control outcome, but keep separate controls when they enforce different trust decisions or contain different failure modes. If removing one layer would make it harder to prove why access was allowed or denied, you are not dealing with redundant tooling.
What to prioritise: Put authoritative identity, device posture and access enforcement on the same decision path first, then remove only the tools that no longer contribute unique evidence or control. In practice, that means preserving the source systems that produce high-confidence posture and lifecycle data before retiring any overlay products.
Common mistake: Teams often start with cost reduction and end up eliminating the one component that provided independent verification. That usually creates a false sense of simplification, because the environment looks cleaner while the actual control model becomes harder to trust.
Practitioner takeaway: The right consolidation target is a clearer control model, not a smaller vendor count, so preserve any tool that adds distinct enforcement, evidence or containment.
Related resources from NHI Mgmt Group
- How should organisations manage identity and access when users need to reach cloud apps, Macs, Linux systems, and WiFi from one control plane?
- Should organisations move from PAM to an identity-centric control plane?
- Should organisations centralise all server, database, and Kubernetes access in one control plane?
- Should organisations replace bastion hosts with a broader access control plane?