Creating a folder in S3

Tags are not required

resource "aws_s3_bucket" "bucket_name" {
  bucket = "demo_bucket"

  tags = {
    Name        = "My bucket"
    Environment = "Dev"
  }
}

resource "aws_s3_object" "folder_name" {
  bucket = aws_s3_bucket.bucket_name.id
  key    = "demo/directory/"
}

Uploading a file to S3

resource "aws_s3_object" "object" {
  bucket = "your_bucket_name"
  key    = "new_object_key"
  source = "path/to/file"
  etag = filemd5("path/to/file")
}

The filemd5() function is available in Terraform 0.11.12 and later

For Terraform 0.11.11 and earlier, use the md5() function and the file() function:

etag = "${md5(file("path/to/file"))}"