What are providers used for in Terraform?

In Terraform, providers are plugins that enable Terraform to interact with external services and platforms (such as AWS, Azure, Google Cloud, Kubernetes, etc.).

Providers implement APIs of specific services, offering resources and data that can be described in Terraform configurations.

Without providers, Terraform would not be able to create, modify, or delete infrastructure, as they ensure communication with the necessary systems.

An example of using the AWS provider:

provider "aws" {
  region = "us-west-2"
}

resource "aws_instance" "example" {
  ami           = "ami-0c55b159cbfafe1f0"
  instance_type = "t2.micro"
}

Here, the AWS provider allows managing AWS resources through Terraform.