Quick answer
Use an Entra agent identity as the agent’s primary, governable nonhuman principal. Add the optional agent’s user account only when a system specifically requires a user identity. Create a Dataverse agent user when that Entra identity needs security roles and attribution inside a Dataverse environment.
A conventional service principal represents an application or workload but lacks the agent-specific blueprint, parent-child, sponsor, user-account, and governance semantics documented by Entra Agent ID.
Identity comparison
| Construct | Primary job | Key boundary |
|---|---|---|
| Conventional service principal | Authenticate and authorize an application or workload | Not an agent-specific identity model |
| Entra agent identity | Primary principal for one deployed agent | Special service principal created from a blueprint; tenant-local |
| Agent identity blueprint | Reusable template and credential holder for a kind of agent | Can create and obtain tokens for child agent identities under consent and policy |
| Agent’s user account | Optional child for user-only resources and digital-worker scenarios | Immutable one-to-one parent link; separate ID; restricted nonhuman user |
| Dataverse agent user | Security principal inside a Dataverse environment | Receives Dataverse roles for that environment |
The Entra agent identity itself has no credentials. Microsoft documents the blueprint as holding federated credentials, certificates/keys, or client secrets and acquiring tokens on behalf of agent identities. Agent identities remain single-tenant even when a blueprint can be published across tenants.
Agent user restrictions
An agent’s user account has a separate identifier and can authenticate only through its parent relationship. It has no password or passkey, cannot receive privileged administrator roles or custom roles, and cannot join role-assignable groups. It can be added to ordinary or dynamic groups, administrative units, and receive licenses when those user-like capabilities are required.
Creation through Microsoft Graph establishes the Entra identity but does not provision full Microsoft 365 capabilities. Microsoft directs teams that need mailbox, Teams presence, or broader digital-worker participation toward supported Microsoft Teams, Agent 365, and SDK paths. Recheck current licensing and provisioning documentation.
Choose the narrowest construct
Start with an agent identity and explicitly document why another construct is needed. Do not create a user account solely because it appears familiar to an administrator. Avoid group inheritance that silently expands aggregate permissions.
For Dataverse, use a dedicated environment role and keep the identity-to-environment mapping, expected actions, denied actions, audit events, owner, sponsor, and retirement procedure traceable. See the Dataverse preview guide and readiness checker.
Frequently asked questions
Is an Entra agent identity a service principal?
Microsoft describes an agent identity as a special service principal created from an agent identity blueprint and used as the agent’s primary principal.
When is an agent’s user account needed?
It is optional and intended for resources or collaborative workflows that require a user identity, such as specific APIs, mailboxes, chat, or digital-worker participation.
Can an agent user receive privileged administrator roles?
No. Microsoft says agent user accounts have no passwords or passkeys and cannot receive privileged administrator roles, custom role assignments, or membership in role-assignable groups.
Official sources
- Microsoft Learn: Agent identities
- Microsoft Learn: Agent’s user account
- Microsoft Graph: agentUser resource
Source check: August 12, 2026. Recheck identity schemas, authentication, provisioning paths, permissions, licenses, and platform availability.