Terraform really shines when you have a complex environment that depends on various external services. I don't know enough about your architecture to comment on

Terraform really shines when you have a complex environment that depends on various external services. I don't know enough about your architecture to comment on the benefits for you, but for a generic web services environment on, say, AWS, you have network configuration (VPC, subnets, security groups), EC2, load balancers, S3 buckets, RDS instances (managed databases), DNS, and possibly a number of other services which need to be set up for everything to work. Explicitly defining what services your product depends on and precisely how they're to be configured is extremely valuable. You certainly can write Ansible playbooks to create all of those resources if that works better for your team, but generally it's better to draw a line between configuring your VM/container/server and provisioning all the infrastructure it depends on.