In this video, I give some tips on how you can deploy your website to a production website. If you are manually copying config and files to servers then you are doing it wrong. Umbraco makes automatic deployments super easy and simple. You can use either Umbraco cloud that automatically configures everything fo you, or, you could use something like VSTS.
If you don't get why all this is so important then I suggest you read a book called the Pheonix project. This book is really simple and easy to read as it's written as a novel rather than a technical book.