This particular example is referred to ELB creation with a target group and a listener.
As you (probably) know, Terraform doesn’t support if statements.
Luckily we can achieve the same result by using a specific parameter called count.
You can think about it this way: you can set _count _to 1 on a specific resource and get one copy of that resource.
However, setting the same _count _parameter to 0 you won’t get any resource created.
So, as already mentioned, you won’t need if/else statements at all, Terraform use conditional expressions with the following format:
<CONDITION> ? <TRUE_VAL> <FALSE_VAL>
All that Terraform does is nothing but evaluating the boolean logic in CONDITION and, based on that, if the value is true _it will return TRUE_VAL otherwise it’ll return FALSE_VAL if the result is _false.
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