Architecture

Architecture

Core platform components

• Networking: VPC + Service Networking peering range
• Apigee Organization: top-level container
• Apigee Instances: runtime instances per region
• Environments: dev/test/prod
• EnvGroups: hostnames mapped to environments

Dependency ordering

1. Networking and API enablement
2. Apigee Organization
3. Apigee Instances
4. Environments and instance attachments
5. EnvGroups and envgroup attachments

Reference diagrams

Single-region baseline

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flowchart LR
  User((Client)) -->|HTTPS| Edge["Public DNS and TLS certs"]
  Edge -->|Private access| LB["Ingress ILB or Gateway"]
  LB --> Apigee["Apigee X Runtime"]
  Apigee -->|mTLS private| PSC["Private Service Connect"]
  PSC --> Backends["GCP services or private backends"]
  Apigee --> Logs["Cloud Logging"]
  Apigee --> Mon["Cloud Monitoring"]

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Multi-region HA

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flowchart LR
  User((Client)) --> DNS["Global DNS and traffic policy"]
  DNS --> R1["Region A ingress"]
  DNS --> R2["Region B ingress"]
  R1 --> A["Apigee X Instance A"]
  R2 --> B["Apigee X Instance B"]
  A --> Backends["Private backends"]
  B --> Backends
  A --> Obs["Central observability"]
  B --> Obs

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CI/CD + Policy

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flowchart LR
  Dev["Developer"] --> PR["Pull request"]
  PR --> CI["CI: fmt, validate, security"]
  CI -->|pass| Plan["Terraform plan"]
  Plan --> Review["Approval gate"]
  Review --> Apply["Terraform apply"]
  Apply --> Drift["Scheduled drift detection"]
  CI --> Policy["OPA or Conftest policy set"]
  Policy --> CI

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