Introduction :

Terraform is a tool for building, changing, and versioning infrastructure safely and efficiently. It can manage popular service providers as well as custom in-house solutions.

You can use Terraform to create and manage resources such as virtual machines, DNS entries, and databases. It uses a simple, human-readable language called HashiCorp Configuration Language (HCL) to describe infrastructure as code. This allows for versioning, collaboration, and easier auditing of infrastructure changes.

Terraform also has a feature called "state" which allows it to keep track of the resources it has created and manage updates to them. This allows for easy rollback and management of the entire infrastructure.

Before you can use Terraform, you will need to install it on your computer and set up a provider, which is the service or platform you want to use to manage your infrastructure. Once you have done this, you can write Terraform configuration files describing the resources you want to create and use the terraform command-line tool to create, modify, and destroy those resources.

You can also use Terraform with remote state, which allows you to store the state file in a remote location such as S3 bucket, this allows multiple teams to work on the same infrastructure and manage the state file.

Overall, Terraform is a powerful tool for managing infrastructure as code and can be used to automate the process of creating, modifying, and destroying resources.