# Organizations

### Overview

• Global service

• Allows to manage multiple AWS accounts&#x20;

• The main account is the master account

• Cost Benefits:

* Consolidated Billing across all accounts - single payment method
* Pricing benefits from aggregated usage (volume discount for EC2, S3...)&#x20;
* Pooling of Reserved EC2 instances for optimal savings

• API is available to automate AWS account creation

• Restrict account privileges using Service Control Policies (SCP)

### Multi Account Strategies

* Create accounts per department, per cost center, per dev/test/prod, based on regulatory restrictions (using SCP), for better resource isolation (ex: VPC), to have separate per-account\
  ser vice limits, isolated account for logging
* Multi Account vs One Account Multi VPC
* Use tagging standards for billing purposes
* Enable CloudTrail on all accounts, send logs to the central S3 account
* Send CloudWatch Logs to the central logging account

<figure><img src="https://1722711354-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwNXdoUkfmcozr29fRrfb%2Fuploads%2FjXa2lyqP8VAa4PpD6215%2FScreenshot%202023-12-25%20at%2003.44.46.png?alt=media&#x26;token=48aa9a31-e2c7-4cc1-92a8-05e0e62d0ec6" alt=""><figcaption></figcaption></figure>

<figure><img src="https://1722711354-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwNXdoUkfmcozr29fRrfb%2Fuploads%2Fopzgqa3J9LbR0ryRvqB3%2FScreenshot%202023-12-25%20at%2003.45.03.png?alt=media&#x26;token=b04c7c31-5658-4693-92c2-32eae20b9845" alt=""><figcaption></figcaption></figure>

### Consolidated Billing

• When enabled, provides you with:

* Combined Usage – combine the usage across all AWS accounts in the AWS Organization to share the volume pricing, Reserved Instances and Savings Plans discounts
* One Bill – get one bill for all AWS Accounts in the AWS Organization

&#x20;• The management account can turn off Reserved Instances discount sharing for any account in the AWS Organization, including itself

<figure><img src="https://1722711354-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FwNXdoUkfmcozr29fRrfb%2Fuploads%2FU0L3SMwlKak2a7yNKSjC%2FScreenshot%202023-12-25%20at%2003.46.50.png?alt=media&#x26;token=9bfed817-0ea2-4810-868b-553d6dea3322" alt=""><figcaption></figcaption></figure>
