The monthly traffic feature, which is sometimes also called bandwidth or info transfer, refers to the full amount of info that can be uploaded to your website hosting account and downloaded from it each month. Your site traffic is generated mostly by website visits - when someone goes to your web site, the web pages they view are downloaded from your hosting server to his / her machine or smartphone and they are shown by the web browser. What counts towards the web site traffic produced is the overall size of these pages, so the more site visitors you get for some period of time, the more web site traffic will be produced. Along with the website visits, file uploads will also be counted towards the total monthly transfer which means that every time you upload website content or any other files by using a file manager or an FTP application, they will also generate some traffic. The counter resets on the very first day of every month and it's not related to the date you have signed up and the date you've renewed your web hosting plan.