Anytime any info is uploaded to a cloud web hosting account or downloaded from it, some website traffic is produced which is a feature that every single hosting plan includes. It's also one of the features it is important to check, since how much site traffic allowance you'll need depends on what exactly you need the account for. The website traffic is mostly produced by downloads and this includes web site visits. Basically, every time somebody opens your web site, the pages are downloaded from the server to his or her computer and they are then displayed by their web browser. It is also recommendable to know that uploads count as well, so that whenever you transfer larger files from your pc to the server, some web site traffic is generated too. Different providers sometimes have different names for this feature, for example traffic, bandwidth, data transfer, yet they all refer to the same thing - the amount of incoming & outgoing data generated for a period of time.