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Multi-Cloud Architecture Patterns

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Multi-Cloud Architecture Patterns

Active-Active Regional Split

  • Run customer-facing services in two providers for resiliency
  • Use global DNS and traffic steering to shift load during incidents
  • Keep shared data replicated asynchronously unless low-latency writes are mandatory

Best-of-Breed Service Mix

  • Analytics and ML on GCP
  • Enterprise identity and Microsoft workloads on Azure
  • Broad ecosystem integrations on AWS
  • Oracle-centric databases and regulated transaction systems on OCI

Primary / DR Pairing

  • Keep primary infrastructure in the provider closest to operational expertise
  • Use a second provider for cold or warm disaster recovery
  • Validate RPO/RTO assumptions with regular failover exercises

Portable Platform Baseline

  • Standardize on Kubernetes, Terraform/OpenTofu, PostgreSQL, Redis, and OpenTelemetry
  • Abstract cloud differences behind modules, golden paths, and service catalogs
  • Document provider-specific exceptions such as IAM, networking, and managed database behavior