Introduction
Machine identity management is moving from a specialist security concern to a core control layer for digital operations. As organisations expand cloud workloads, APIs, connected devices and autonomous software, the number of non-human identities can exceed the human population by orders of magnitude. Market forecasts therefore reflect more than commercial momentum: they show that machine identity is becoming foundational infrastructure for NHI security.
The problem
The central problem is visibility. Certificates, service accounts, API keys, workload identities and embedded credentials are often created by different teams and governed through separate tools. Ownership may be unclear, expiry dates may be missed and permissions may remain active after a workload changes. A growing market does not automatically solve those operational weaknesses. It can also create fragmented controls if buyers purchase point products without an identity lifecycle strategy.
What security teams should examine
Discovery must come first
Organisations need an inventory that connects each machine identity to its workload, owner, environment, purpose and level of privilege. That inventory should be continuously updated rather than treated as a one-time audit.
Lifecycle automation is equally important
Provisioning, rotation, renewal, suspension and retirement should follow workload events and policy, reducing the reliance on manual tickets and preventing stale identities from becoming invisible access paths.
Modern programmes also need risk context
A certificate nearing expiry is an availability risk, while a long-lived token with broad production access is a security risk. Prioritisation should combine identity age, privilege, usage, environment and anomalous behaviour.
For AI systems, Agentic Identity introduces another dimension: an agent may create tool calls, delegate work or operate across systems at machine speed
Controls must record what identity acted, what authority it used and whether that authority was appropriate for the task.