Organizations
Overview
• Global service
• Allows to manage multiple AWS accounts
• 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...)
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
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
• The management account can turn off Reserved Instances discount sharing for any account in the AWS Organization, including itself
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