Dropbox

I use Dropbox for online storage of my business files.  What a simple, easy to use and free service.  It’s available for use across all devices.  The free basic version is exactly what I need as a small start-up business where my priority has to be the safety and security of clients confidential projects, assignments and files.  As sole administrator of my account I can share files with my clients online for amendment and updating at the touch of a button.