Feature Toggles, Blue-Green Deployments & Canary Tests with Terraform

The post discusses approaches to feature toggling, blue-green deployment, and canary testing of Terraform resources to mitigate impact on production infrastructure. It highlights the use of feature toggles with conditional expressions in Terraform, allowing for isolated testing of infrastructure resources without fully recreating the system in a staging environment. The post also explains how to deploy infrastructure in a blue-green approach, which involves creating duplicate sets of resources with new configurations for initial testing in production. Canary tests are used to confirm proper configuration before increasing traffic to new resources. These approaches help mitigate change impact, highlight dependencies, and reduce development environment costs.