Your data is stored somewhere, lots of somewheres, and the network of servers find what you exactly need and deliver it. That's cloud. With cloud you can access your information on any device with an Internet connection. It’s what allows you to make edits to a file in Google Docs on your home computer, and then pick up where you left off when you get to the office. You could share your photo albums, organize your to-do lists, manage your thoughts, share music, use google drive for document management, etc.
