Question

Your networking team manages VPC infrastructure in a separate Terraform configuration with its own state file stored in an S3 backend. The application team needs to reference the VPC ID and subnet IDs (exposed as outputs in the networking configuration) from their own separate configuration, without duplicating or hardcoding those values. What is the recommended approach?

Accepted Answer

Use a terraform_remote_state data source pointing at the networking team's S3 backend to read its exposed output values

Answer

Run 'terraform state pull' on the networking configuration and manually copy the values into the application configuration's variables

Answer

Merge both configurations into a single state file so all outputs are directly accessible

Answer

Use 'terraform state mv' to move the VPC resources into the application team's state file