Google provides a number of services to Google customers. With one Google account, you can have access to Gmail, YouTube, Google Drive and many other services. If you have a Gmail account, you already have the ability to upload, store, manage and download your documents and file using this service.
Look for the features that you want. For effective management of Document and File Storage the service application should:
Most File Storage Applications meet the requirements above. Examples include:
In the figure above you can see a folder structure (similar to a filing cabinet with drawers) and a list of files in a folder (Foreign Exchange). In the folder you see Word documents and PDF files that have been uploaded and stored.