How would you reference the "name" value of the second instance of this fictitious resource?

To reference the "name" value of the second instance of the resource, using an index notation is the correct approach. In most programming and data representation contexts, indexing starts at zero. Therefore, the first item is indexed as [0], the second as [1], and so on.

In this scenario, when discussing the second instance of the fictitious resource known as aws_instance.web, you need to access it using the index [1]. This allows Terraform to pull the "name" attribute specifically from that instance. Thus, using aws_instance.web[1].name accurately retrieves the desired value of the second instance.

Other options use different indexing or naming conventions that do not correctly point to the intended instance. It's essential to remember that when dealing with arrays or lists in Terraform, zero-based indexing is the standard method for element access.