Create aprovider.tf file & add the below code in it.

# Provider name

provider "aws" {

region = var.region

}

# Storing state file on S3 backend

terraform {

backend "s3" {

bucket = "tf-state-dhsoni"

region = "us-west-2"

key = "terraform.tfstate"

}

}

Note:- You need to replace the bucket value here & you need to create bucket manually on AWS. I have already created it