Environment Parity

Maintain environment parity in Terraform by using a single codebase and injecting environment-specific values through tfvars files. This approach ensures resource structures stay identical across dev, staging, and prod while only settings like instance sizes vary.

Manage environment-specific configurations in AWS CDK by using context variables to pass per-environment settings. This configuration-first approach allows you to deploy identical infrastructure code across environments without altering the codebase itself.

Infrastructure behaves differently across environments when parity is broken by maintaining separate codebases. Enforcing a single codebase with configuration-only differences via tfvars or CDK context eliminates these inconsistencies and reduces deployment risks.

Yes, environment parity practices test production behavior before deployment by running identical infrastructure code in dev and staging. You toggle only configuration values like instance sizes and counts, ensuring the resource structure and security configurations remain consistent.

Yes, this environment parity approach supports both Terraform and AWS CDK workflows. It leverages tfvars for Terraform and context for AWS CDK to apply environment differences, ensuring a single codebase is used without altering the underlying infrastructure code.

A limitation of using a single codebase for infrastructure is that resource structures must remain consistent across all environments. You can only vary settings like instance sizes and retention values, meaning fundamentally different architectural needs per environment are not supported by strict parity.