What Google Says:
Google Drive. Work together better. Access your files anywhere. Bring your work to life. Buy what you need & grow flexibly
Source: Google Drive For Business
Why You Should Use It:
Starting with 30GB of storage per user, Google Drive lets you keep all your files and documents online securely. Sync it with your computer to have local copies. Collaborate with others on documents, all saved and backed up in real time. All collaborators see changes instantly as you make them. Awesome stuff!