AWS Organizations is a service that helps you centrally manage and govern your environment as you grow and scale your AWS resources. With AWS Organizations, you can create multiple AWS accounts and organize them into a hierarchy that makes sense for your business. This service allows you to apply policies for governance and compliance, manage billing, and automate account creation.

1. Organization: A collection of AWS accounts that you manage centrally.
2. Root: The top-most container in your organization that can contain organizational units (OUs) and accounts.
3. Organizational Unit (OU): A container for accounts within a root. OUs can also contain other OUs, enabling you to create a hierarchy.
4. Account: A standard AWS account that is part of an organization.
5. Service Control Policies (SCPs): Policies that you can apply to the root, OUs, or individual accounts to manage permissions.

• Centralized Management: Manage multiple AWS accounts from a single location.
• Policy-Based Management: Apply policies to groups of accounts for governance and compliance.
• Consolidated Billing: Combine usage across accounts to receive volume discounts.
• Automated Account Creation: Programmatically create new AWS accounts.

1. Create an Organization:

   • Sign in to the AWS Management Console with your root account.
   • Navigate to the AWS Organizations console.
   • Click on "Create organization".

2. Add Accounts:

   • You can add existing accounts or create new ones.
   • To add an existing account, you need the email address and account ID of the account you want to add.
   • To create a new account, provide the necessary details such as email address, account name, and IAM role name.

3. Create Organizational Units (OUs):

   • In the AWS Organizations console, select the root or an existing OU.
   • Click on "Create organizational unit".
   • Provide a name for the OU and click "Create".

4. Apply Service Control Policies (SCPs):

   • Navigate to the "Policies" section in the AWS Organizations console.
   • Click on "Create policy".
   • Define the policy in JSON format.
   • Attach the policy to the root, OU, or individual account.

This SCP allows all actions except for terminating EC2 instances and deleting EBS volumes.

1. Create an Organization:

   • Follow the steps outlined in the "Setting Up AWS Organizations" section to create an organization.

2. Add an Account:

   • Add an existing account or create a new one.

3. Create an OU:

   • Create an OU named "Development".

4. Apply an SCP:

   • Create an SCP that denies the deletion of S3 buckets.
   • Attach this SCP to the "Development" OU.

1. Create an Organization:

   • Follow the steps in the AWS Management Console.

2. Add an Account:

   • Use the email address and account ID of an existing account or create a new one.

3. Create an OU:

   • Navigate to the root in the AWS Organizations console.
   • Click "Create organizational unit".
   • Name the OU "Development" and click "Create".

4. Apply an SCP:

   • Navigate to the "Policies" section.
   • Click "Create policy".
   • Use the following JSON for the SCP:

• Attach this SCP to the "Development" OU.

• Incorrect Policy Syntax: Ensure that your SCPs are correctly formatted in JSON.
• Overly Restrictive Policies: Be careful not to apply policies that are too restrictive, which could hinder necessary operations.
• Hierarchy Mismanagement: Properly plan your OU hierarchy to reflect your organizational structure for easier management.

AWS Organizations is a powerful tool for managing multiple AWS accounts, providing centralized management, policy-based governance, and consolidated billing. By understanding and utilizing AWS Organizations, you can efficiently scale and manage your AWS environment. In the next module, we will explore best practices and cost management strategies to optimize your AWS usage.