Description
Build a Scalable, Governed Multi-Account AWS Foundation
The AWS Organizations Multi-Account Strategy Guide provides a complete blueprint for designing and implementing an enterprise-scale AWS account architecture. This guide is essential for organizations moving beyond a single AWS account and needing a governance framework that scales with their cloud adoption while maintaining security isolation and cost visibility across business units.
What’s Included
- Organizational Unit (OU) hierarchy design patterns with recommended structures for enterprises
- Service Control Policy (SCP) library with deny-based guardrails for each OU tier
- Account vending automation guide using AWS Control Tower and Account Factory
- Cross-account IAM role architecture with trust policies and session tag patterns
- Centralized logging architecture: CloudTrail, VPC Flow Logs, and Config aggregation
- Security baseline template deployed via CloudFormation StackSets across all accounts
- Cost allocation strategy with tagging standards and AWS Budgets per account
- Network connectivity patterns: Transit Gateway, VPC peering, and PrivateLink topologies
Who This Is For
- Cloud Architects designing multi-account strategies for enterprise organizations
- Platform Engineering teams building internal developer platforms on AWS
- Security teams implementing centralized governance across distributed AWS accounts
- CTOs and VPs of Engineering evaluating multi-account versus single-account approaches
Why Choose Citadel
This guide reflects the patterns Citadel’s architects deploy for organizations managing 50 to 500+ AWS accounts. Every recommendation has been validated in production and includes decision matrices to help you choose the right approach for your organization’s size, compliance requirements, and operational maturity.
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