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title: "Federated User"
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type: concept
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tags:
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- aws
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- security
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- identity
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sources: [ctp-topic-1-gruntwork-landing-zone-architecture]
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last_updated: 2026-04-18
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---
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## Summary
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通过 AD 组映射到 IAM 角色的联邦身份访问机制,替代传统 IAM 用户实现安全账户管理。
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## Definition
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Federated User(联邦用户)是基于身份提供商(IdP)的访问方式,用户通过企业 Active Directory(AD)进行身份验证,然后通过 SAML 或 OIDC 映射到 AWS IAM 角色获取访问权限。
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## Advantages
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- **集中管理**:用户凭据由企业 AD 集中管理,无需在 AWS 中单独创建 IAM 用户
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- **自动生命周期**:员工离职后自动失去 AWS 访问权限
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- **最小权限原则**:通过 AD 组精确控制用户获得的 IAM 角色和权限
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- **审计合规**:所有访问通过企业身份系统记录和审计
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## Connections
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- [[IAM]] ← accepts ← [[Federated-User]]
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- [[Active-Directory]] ← authenticates ← [[Federated-User]]
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- [[Gruntwork-Landing-Zone]] ← uses ← [[Federated-User]]
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