Purpose of This Solution

IaC CDN Multi-Region for AWS provides the infrastructure needed to efficiently serve static content to a global audience by deploying a CDN with multi-regional origins. It supports:

  • Hosting static websites with region-specific performance optimization.
  • Serving Single Page Applications (SPAs) and Progressive Web Apps (PWAs) with low latency globally.
  • Delivering media assets like images and videos from geographically distributed S3 buckets.

By automating the deployment of a multi-region architecture, this solution empowers developers to enhance user experience with fast, scalable, and secure content delivery across the globe.

What Problem Does It Solve?

Traditional CDNs rely on a single-origin server, which can lead to latency issues for users far from the origin. IaC CDN Multi-Region for AWS solves this by:

  • Deploying multiple S3 origins across AWS regions for optimal regional performance.
  • Routing requests dynamically to the nearest origin using CloudFront Functions.
  • Ensuring high availability and redundancy with a geographically distributed architecture.

Key Features

  • Multi-Region Origins: S3 buckets deployed in multiple AWS regions for reduced latency and regional redundancy. Files are automatically replicated between the main region and all additional regions, ensuring consistency and availability across origins.
  • No Cold Start: Unlike Lambda@Edge, CloudFront Functions operate without cold starts, ensuring faster request handling and improved performance.
  • Geographic Routing: CloudFront Functions intelligently route requests to the nearest S3 bucket based on the user's location.
  • Environment-Specific Deployments: Choose between DEV and PROD environments with tailored configurations.
  • HTTPS Enforcement: Secure content delivery with automated SSL certificate provisioning via AWS Certificate Manager (ACM).
  • Geo-Restriction Support: Control access by whitelisting or blacklisting countries.
  • Custom Domain Integration: Use your own domain with seamless DNS management through Route 53.
  • Comprehensive Logging: Monitor traffic patterns with optional CloudFront logging.
  • Flexible Pricing Classes: Optimize costs by selecting specific CloudFront edge locations.

Demo

To showcase the functionality of dynamic routing, we have deployed this architecture in the following AWS regions: us-east-1, eu-central-1, ap-southeast-2, and sa-east-1.

Each region hosts a unique image file labeled with the region's name. When you access the CloudFront distribution URL in your browser, the system dynamically routes your request to the nearest region based on your geographic location. The image displayed will confirm the region that served your request.

Services Used

This solution leverages the following AWS services:

  • Amazon CloudFront: For fast, secure, and reliable global content delivery.
  • Amazon S3: Multi-region origins for static content storage and delivery.
  • Amazon Route 53 (Optional): Manage DNS records for custom domains.
  • AWS Certificate Manager (ACM) (Optional): Provision and manage SSL certificates for HTTPS.

Technical Details

The CloudFormation template provides a modular architecture with customizable parameters:

  • Multi-Region S3 Buckets: Deploys buckets across regions with secure bucket policies and lifecycle rules.
  • CloudFront Distribution: Supports geographic routing, HTTPS, and customizable edge location pricing classes.
  • CloudFront Function: Implements dynamic origin selection based on viewer location.
  • Route 53: Optional DNS management for custom domains.
  • SSL Certificates: Automated provisioning and validation for custom domains using ACM.
  • Logging: CloudFront logs stored in S3 with lifecycle rules for cost control.

Benefits

  • Scalability: Effortlessly scale to meet the demands of global audiences.
  • Improved Performance: Minimized latency through geographic-based routing.
  • Redundancy: Multi-region origins ensure high availability.
  • Security: Enforce HTTPS, restrict S3 access, and control distribution with geo-restrictions.
  • Cost Efficiency: Optimize costs with configurable pricing classes and lifecycle policies.
  • Automation: Deploy and manage a complex multi-region CDN with a single CloudFormation template.

Limitations

  • Geographic Routing Precision: Operates at the country level, which may not be precise near borders.
  • Primary Region: The architecture uses us-east-1 as the primary region.
  • Single Account: The stack is deployed in a single AWS account. Multi-account setups aren't supported.

Bucket Policy and Origin Access Control (OAC)

The solution enforces strict security through a tightly controlled bucket policy and Origin Access Control (OAC):

  • Bucket Protection: Ensures S3 content is accessible only via CloudFront, preventing unauthorized access.
  • End-to-End Encryption: Encrypts traffic both between the viewer and CloudFront and between CloudFront and the S3 bucket.

Pricing

The IaC CDN Multi-Region for AWS is available for just $140.

Included in your purchase:

  • CloudFormation Template: A complete IaC solution for deploying a multi-region CDN architecture.
  • Future Updates: Free updates within the current major version.
  • Documentation: Step-by-step instructions for deployment and configuration.
  • Email Support: 1 hour of email support to assist with setup or troubleshooting.

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