Terraform: standardize AWS tags

I love problems that force me to learn something "new" to solve it!

When I started to use Terraform a week ago, one of the problems that I wanted to solve was to add unique Name tags to my AWS resources along with a set of standard tags. This is how I resolved it.

1. Create a map in locals where I declared the tags (as per a PluralSight video lesson!).

locals {
  common_tags = {
    company      = var.company
    project      = "${var.company}-${var.project}"
    billing_code = var.billing_code
  }
}        

2. Add the Name tag in the resource

# 1.VPC
resource "aws_vpc" "security" {
  cidr_block           = var.vpc_cidr
  enable_dns_hostnames = true

  tags = merge(local.common_tags, { Name = "Security VPC" })
}        

This helped with two things.

1. Now I see Names of resources in AWS console, not empty space when you add them without a Name tag!

2. Normally I am lazy when I add resources in Console to add the tags! But no I just have to add them to my code as I need them. Any new new "terraform apply" only updates the deployment.

References:

Terraform docs