Terraform vs. Ansible

I'm still trying to get my head around whether I should use Ansible or Terraform for provisioning some (network) infrastructure. I know the default answer is to use TF for provisioning and to use Ansible for configuration. I also understand that most things that can be done with TF can be done with Ansible. Both tools are platform agnostic (through providers...) So I see a lot of similarities but would like to understand more the differences between both.

My use case is to create network resources (day 1 operation) and to continue to update them later on (in day 2) or to add resources later on (in day 2).

For this use case, I see one of the main advantages for TF that it keeps track of state where Ansible does not seem to do that. I see TF also more as a lifecycle management tool.

What could be other arguments to favor TF above Ansible for this use case?