Liferay provides a built-in capability to communicate with the Amazon S3 cloud. This feature gives users a really powerful tool to store their documents in a cloud-based solution. The Amazon Simple Storage Service (Amazon S3) is a scalable, high-speed, low-cost, and web-based service designed for online backup and archiving of data such as documents, presentations, spreadsheets, pictures, photos, and so on. The greatest feature of the Amazon Storage is the fact that it claims 99.99 percent availability of objects over a given year. Moreover, these services provide highly scalable storage that can be easily increased as data increases. The whole infrastructure has secure SSL data transfer and encryption. Amazon Simple Storage Service is a part of the bigger project called Amazon Web Services (http://aws.amazon.com). This is a collection of many web services, such as computing cloud, storage cloud, databases, networking, and administration and security...