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07/06/2026 9:10 pm
TL;DR: Centralized identity management consolidates authentication, authorization, and provisioning into one control plane, improving visibility and lifecycle handling while creating a single point of failure if poorly implemented, according to StrongDM. The trade-off is operational simplicity versus concentration risk, and that balance matters across human IAM, NHI governance, and adjacent workload access models.
NHIMG editorial — based on content published by StrongDM: Access Centralized and Decentralized Identity Management Explained
By the numbers:
- 90% of IT leaders say properly managing NHIs is essential for a successful zero-trust implementation.
- Only 5.7% of organisations have full visibility into their service accounts.
- 97% of NHIs carry excessive privileges, increasing unauthorised access and broadening the attack surface.
Questions worth separating out
Q: How should security teams decide between centralized and decentralized identity management?
A: Choose the model that best matches your need for visibility, lifecycle control, and operational consistency.
Q: Why does centralized identity management create a single point of failure?
A: Because identity records, policy decisions, and access workflows are concentrated in one repository or control plane.
Q: What should IAM teams check after centralizing access controls?
A: They should confirm that provisioning, role changes, and offboarding actually reach every downstream system that consumes identity data.
Practitioner guidance
- Map every identity source to downstream enforcement points Build a list of all applications, cloud services, and infrastructure systems that consume central identity data, then test whether provisioning and deprovisioning propagate to each one without manual intervention.
- Treat the identity control plane as privileged infrastructure Apply strong admin separation, logging, and recovery controls to the central repository, because compromise there can affect every connected resource and every non-human identity that depends on it.
- Verify leaver actions against live access, not records alone Use access checks to confirm that removed users, service accounts, and tokens are actually blocked in the systems they touched, rather than assuming the central source of truth is enough.
What's in the full article
StrongDM's full blog covers the operational detail this post intentionally leaves for the source:
- Step-by-step explanation of centralized provisioning and deprovisioning workflows across connected systems.
- Practical examples of how a central identity repository changes authentication and authorization handling.
- Detailed comparison of centralized and decentralized identity models in real-world infrastructure.
- Implementation context for teams using StrongDM across cloud accounts, databases, and Kubernetes.
👉 Read StrongDM's guide to centralized and decentralized identity management →
Centralized identity management: what IAM teams give up and gain?
Explore further
08/06/2026 9:00 am
Centralization solves fragmentation, but it also turns identity into a high-value concentration point. The article correctly frames the upside of one control plane for authentication, authorization, and provisioning, but that same design means failure in the repository or policy layer can affect many systems at once. For human IAM this is an administration problem, while for NHI governance it becomes a scale problem because machine identities are numerous and fast-moving. Practitioners should treat the central identity layer as a control plane that must withstand both operational error and adversarial pressure.
A few things that frame the scale:
- Only 5.7% of organisations have full visibility into their service accounts, according to Ultimate Guide to NHIs.
- 79% of organisations have experienced secrets leaks, and 77% of those incidents resulted in tangible damage.
A question worth separating out:
Q: How do centralized IAM models affect non-human identity governance?
A: They can improve visibility and revocation, but only if service accounts, API keys, and workload credentials are included in the same lifecycle and audit processes as human users. Without that, centralization can hide NHI sprawl behind a clean-looking dashboard while privileges continue to accumulate.
👉 Read our full editorial: Centralized identity management exposes the visibility trade-off
