Making Temporal Cloud a Multi-Cloud Platform

What this post added

This post details Temporal Cloud's expansion from AWS to Google Cloud, highlighting the technical challenges and solutions involved in becoming a multi-cloud platform. It discusses the limitations of standard containerization and orchestration tools (Kubernetes) and IaC tools (Terraform) when dealing with provider-specific APIs and resource models. Specific examples are provided for Kubernetes service annotations (AWS EKS vs. GCP GKE) and Terraform configurations for load balancers (AWS ALB vs. GCP HTTPS Load Balancer). The post also addresses the need for compatible visibility layers, noting the difference between AWS OpenSearch and Google Cloud's lack of a directly compatible ElasticSearch 7 equivalent. The core solution involved leveraging Temporal's durable execution capabilities to manage the complexity of multi-cloud deployments and ensure consistency.