What are the different kinds of Account at AWS?

🔹 Types of Accounts in AWS

AWS has different types of accounts that serve various purposes in managing access, security, and resources. Below is a detailed breakdown of each type:

1️⃣ AWS Root Account

✅ What is it?

• The Root Account is the primary AWS account created when signing up for AWS.
• It has unlimited access to all AWS resources and billing settings.
• Uses: Managing AWS Organizations, enabling/disabling services, account-level settings.

✅ Key Characteristics:

• Full administrative control over AWS services and accounts.
• Cannot be restricted by IAM policies.
• Required for: Changing billing settings, closing the AWS account, enabling MFA.

✅ Security Best Practices:

• ❌ Do NOT use the root account for daily operations.
• ✅ Enable MFA (Multi-Factor Authentication).
• ✅ Create IAM users/roles for regular tasks.

2️⃣ AWS IAM Account (IAM User)

✅ What is it?

• IAM (Identity and Access Management) accounts are used to manage user access and permissions.
• IAM users are NOT AWS accounts, but rather identities within an AWS account.

✅ Key Characteristics:

• IAM users log in using IAM credentials, not root credentials.
• Permissions are defined using IAM Policies.
• IAM users can have limited or full access to AWS resources.

✅ Example Use Case:

• Developers, DevOps Engineers, and Admins use IAM accounts to access AWS securely.

✅ Security Best Practices:

• Use IAM Roles instead of long-term IAM user credentials.
• Enable MFA for IAM users.
• Use IAM groups to manage permissions efficiently.

3️⃣ AWS IAM Role

✅ What is it?

• An IAM Role is an identity that AWS services, users, or applications assume to get temporary permissions.
• Unlike IAM users, IAM roles do not have a username/password.

✅ Key Characteristics:

• Can be assumed by AWS services (EC2, Lambda, ECS, etc.).
• Used for cross-account access (e.g., allowing one AWS account to access another).
• IAM Roles use temporary security credentials.

✅ Example Use Case:

• An EC2 instance needs to access S3 → Attach an IAM Role to the EC2 instance.
• Developers switch roles instead of using IAM user credentials.

✅ Security Best Practices:

• Use IAM roles instead of IAM users wherever possible.
• Restrict role assumptions using sts:AssumeRole.

4️⃣ AWS Organizations Account

✅ What is it?

• AWS Organizations groups multiple AWS accounts under a single management account.
• It allows centralized billing, security, and policy enforcement.

✅ Key Characteristics:

• Root Account manages the AWS Organization.
• Member Accounts are individual AWS accounts under the organization.
• Delegated Administrators can manage AWS services across multiple accounts.

✅ Example Use Case:

• Large enterprises with multiple AWS accounts (Prod, Dev, UAT, Staging).
• Centralized billing and access control.

✅ Security Best Practices:

• Use Service Control Policies (SCPs) to restrict permissions across accounts.
• Enable AWS CloudTrail and AWS Config for centralized logging.

5️⃣ AWS Billing Account

✅ What is it?

• AWS Billing Account is the account that manages consolidated billing in an AWS Organization.
• It can view, pay, and manage AWS bills for linked accounts.

✅ Key Characteristics:

• The management (payer) account in AWS Organizations controls billing.
• Linked accounts share the same billing but have separate resources.

✅ Example Use Case:

• A company has 5 AWS accounts (Prod, Dev, Staging, Security, Logging) under a single Billing Account.
• The Finance team manages AWS spending through AWS Cost Explorer.

✅ Security Best Practices:

• Restrict IAM access to billing settings (aws-portal:*).
• Enable Cost & Usage Reports to track spending.

6️⃣ AWS IAM Identity Center (AWS SSO) Account

✅ What is it?

• AWS IAM Identity Center (formerly AWS SSO) provides centralized user authentication across multiple AWS accounts.

✅ Key Characteristics:

• Users log in using a single set of credentials (like Okta, Azure AD, or Google Workspace).
• Provides federated access to AWS.
• Eliminates the need for creating IAM users.

✅ Example Use Case:

• A developer logs in once and switches between Prod, UAT, and Dev accounts.
• Integrates with corporate identity providers.

✅ Security Best Practices:

• Use AWS IAM Identity Center (SSO) instead of IAM users for enterprise authentication.
• Enable MFA for SSO logins.

🔹 Summary: Different AWS Accounts and Their Uses

🎯 Final Thoughts

✅ Use AWS Organizations to manage multiple AWS accounts centrally.
✅ Use IAM Roles instead of IAM users wherever possible.
✅ Use AWS IAM Identity Center (SSO) for enterprise authentication.
✅ Keep the Root Account secure (MFA enabled, minimal usage).

Rajesh Kumar

I’m Rajesh Kumar, a DevOps, SRE, DevSecOps, Cloud, and Platform Engineering expert passionate about sharing practical knowledge, real-world experiences, and industry best practices. I have worked at Cotocus and regularly write about technology, travel, investing, health, product reviews, and digital marketing through my various platforms.

I publish technical articles at DevOps School, travel stories at Holiday Landmark, stock market insights at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at TrueReviewNow, and SEO and digital marketing strategies at Wizbrand.