AWS - Set a global budget for a project? - terraform

Question

I am working on a Terraform project to create, update or delete AWS sandboxs for every new employee in my company. However, we would like to have a fix budget for every sandbox and if possible, not being able to exceed that budget. I read about AWS Budget Actions but I am not sure what will be the best way to integrate it with my current code.
main.tf
## this is creating a new project and I would like to set a budget of $50 for this account
resource "aws_organizations_account" "account" {
name = "sandbox"
email = "new-user+sandbox#company.com"
role_name = "myOrganizationRole"
}

Answer 1

You need to create aws_budgets_budget and aws_budgets_budget_action resources in the new account. To create resources in the new account, you need to create a provider for that account by assuming the administration role that was created:
provider "aws" {
alias = "sandbox"
region = "us-east-1"
...
// Specify your credentials source, same as you use for the provider you used for the aws_organizations_account resource
...
assume_role {
role_arn = "arn:aws:iam::${aws_organizations_account.account.id}:role/${aws_organizations_account.account.role_name}"
}
}
And now you can use that provider to create the budget resources in the new sandbox account (note the provider input parameters):
resource "aws_budgets_budget" "example" {
provider = aws.sandbox
name = "example"
budget_type = "USAGE"
limit_amount = "10.0"
limit_unit = "dollars"
time_period_start = "2006-01-02_15:04"
time_unit = "MONTHLY"
}
resource "aws_budgets_budget_action" "example" {
provider = aws.sandbox
budget_name = aws_budgets_budget.example.name
...
}