The monthly traffic feature, that’s sometimes also called bandwidth or information transfer, refers to the total amount of info that can be uploaded to your website hosting account and downloaded from it monthly. Your traffic is produced generally by website visits - each time somebody loads your web site, the web pages they view are downloaded from the hosting server to his / her machine or smartphone and they're shown by the browser. What counts towards the web site traffic produced is the overall size of these webpages, consequently the more visitors you get for a given period of time, the more traffic will be produced. In addition to the site visits, file uploads are also counted towards the total monthly transfer i.e. any time you upload website content or other files through a file manager or an FTP program, they will also generate some site traffic. The counter resets on the first day of every month and it's not related to the date you have signed up or the date you've renewed your hosting package.