The cloud backup should let you access your backed up files from a machine that is not your own. It should let you connect to the server via a web browser so that you can get to work on your data and files even when you are not at home. Most service providers like Gigasoft OBM Backup let you log in to your account with a login id and a password. You do not need to bother about carrying your computer with you everywhere. Just enter the website, put in your details and your saved files pop up for use. Also, be wary of restrictions on transferring bulk data.