If you didn’t know, you can easily setup your static website and host on S3. Just follow these simple instructions and you are done.
https://docs.aws.amazon.com/AmazonS3/latest/dev/website-hosting-custom-domain-walkthrough.html
Now you might want to version control your hosted website and would want to avoid uploading this content again and again.
With the help of Gitlab Runner you can simply remove the hassle of uploading your updated code.