Domain Configuration Fundamentals

Custom domain routing transforms api.yourdomain.com into professional endpoints while abstracting cloud provider specifics. In serverless environments, this requires:

• Domain verification via DNS records (CNAME or ALIAS)
• ACM certificate provisioning for HTTPS
• API Gateway domain mapping
• Route53 routing policies

AWS SAM configuration example:

Resources:
  MyApi:
    Type: AWS::Serverless::Api
    Properties:
      StageName: Prod
      Domain:
        DomainName: api.yourdomain.com
        CertificateArn: !Ref MyCertificate
        Route53:
          HostedZoneId: Z1EXAMPLE

Advanced Routing Strategies

Implement dynamic routing scenarios:

For blue/green deployments using weighted routing:

// Pseudo-code for canary release routing
const weights = {
  current: 90,   // Existing version
  canary: 10     // New release
};

Security and Compliance

Critical safeguards for domain routing:

• Enable AWS WAF with geo-restriction rules
• Implement strict CORS policies
• Rotate ACM certificates quarterly
• Enforce TLS 1.3-only policies
• Audit Route53 changes via CloudTrail

HIPAA-compliant configuration requires:

aws apigateway update-domain-name 
  --domain-name api.healthapp.com 
  --security-policy TLS_1_2_2021 # HIPAA minimum

Performance Optimization Techniques

Reduce latency through:

• Edge-optimized API endpoints
• CloudFront integration for caching
• DNS-based latency routing
• Connection keep-alive tuning

Benchmark results for EU traffic:

Deployment Automation

CI/CD pipeline essentials:

1. Domain validation in staging environment
2. Automated DNS record updates
3. Canary testing with 5% traffic
4. Automated rollback on 5xx errors

GitHub Actions workflow snippet:

- name: Deploy Domain Configuration
  uses: aws-actions/configure-aws-credentials@v2
  with:
    role-to-assume: arn:aws:iam::123456789012:role/deploy-role
  run: |
    sam deploy --template domain-template.yaml 
              --stack-name prod-domains 
              --capabilities CAPABILITY_IAM