Terraform is a widely used tool for infrastructure as code. You describe the cloud resources you want, such as databases, networks and virtual machines, in configuration files, and Terraform works out what needs to be created, changed or removed to match. This replaces manual clicking in a web console with something repeatable and reviewable.
Using configuration files has practical benefits. Changes can be stored in version control, reviewed before they are applied, and reused across environments, which makes setups more consistent and easier to reproduce. Terraform shows a plan of intended changes before it applies them.
It also has pitfalls. Terraform keeps a state file that records what it manages, and that file can contain sensitive values, so it needs protection and careful handling. Changes made manually in a console can drift from what the files describe, and applying a configuration without reading the plan can remove or replace resources unexpectedly.
Good practice is to store state securely, review every plan before applying, limit the permissions Terraform uses to what it needs, and avoid editing managed resources by hand. Check the provider's documentation to confirm that the service you want is supported and which settings it exposes.