OneDrive is a Microsoft cloud service that links with your Microsoft Live account and helps you sync your data across multiple computers and the internet. When you sign up you initially get 15 GB for free. You can purchase more space as you need it. Another cool feature is that it will back up photos from your smartphones. When you activate camera roll backup to save your photos automatically, you’ll get an additional 3 GB for free. OneDrive offers desktop syncing, mobile access, you can create and edit office documents from your browser, real-time co-authoring on office documents, and built in integration with Office desktop. Also if you have Office365 subscription, you’ll get an extra 20 GB for free.