Regiões e zonas de disponibilidade na nuvem

# List all available regions
aws ec2 describe-regions --output table

# List AZs in current region
aws ec2 describe-availability-zones --output table

# Set default region
export AWS_DEFAULT_REGION=us-west-2

# Run command in specific region
aws ec2 describe-instances --region eu-west-1

# Get available AZs
data "aws_availability_zones" "available" {
  state = "available"
}

# Create subnets across AZs
resource "aws_subnet" "app" {
  count             = 2
  vpc_id            = aws_vpc.main.id
  cidr_block        = cidrsubnet(var.vpc_cidr, 8, count.index)
  availability_zone = data.aws_availability_zones.available.names[count.index]
}