Code structure examples

Terraform code structures

These examples are showing AWS provider but the majority of principles shown in the examples can be applied to other public cloud providers as well as other kinds of providers (DNS, DB, Monitoring, etc)

Type	Description	Readiness
small	Few resources, no external dependencies. Single AWS account. Single region. Single environment.	Yes
medium	Several AWS accounts and environments, off-the-shelf infrastructure modules using Terraform.	Yes
large	Many AWS accounts, many regions, urgent need to reduce copy-paste, custom infrastructure modules, heavy usage of compositions. Using Terraform.	WIP
very-large	Several providers (AWS, GCP, Azure). Multi-cloud deployments. Using Terraform.	No

Terragrunt code structures

Type	Description	Readiness
medium	Several AWS accounts and environments, off-the-shelf infrastructure modules, composition pattern using Terragrunt.	No
large	Many AWS accounts, many regions, urgent need to reduce copy-paste, custom infrastructure modules, heavy usage of compositions. Using Terragrunt.	No
very-large	Several providers (AWS, GCP, Azure). Multi-cloud deployments. Using Terragrunt.	No