cloud computing

 I can create a document on my PC at home, continue editing it on the train using my laptop (providing I have an internet connection) and finally print the finished document when I reach my workplace. This is cloud computing, and it enables me to access the services that are important to me, seamlessly, anywhere that I have an internet connection and a suitable device.

1. Lower Initial Cost: Upfront costs can be kept low because cloud storage and associated applications can be rented from a cloud provider. In addition, cloud based applications often work effectively with low specification workstations because some of the processing is carried out in the cloud. This reduces the investment needed for specialist software and hardware.

2. Enhanced Scalability: As an organisation’s needs grow, more resources (storage and/or bandwidth) can be rented from the cloud provider. At any given time the organisation only pays for what it needs.

3. Ease of Maintenance: Software is installed in a single server (or server farm) and so rolling out updates and bug fixes is relatively straightforward. For similar reasons, it is also straightforward to have effective backup and restore processes.

4. Ease of Support: Normally, all users are using the same version of the software. This makes it easier to track bugs and to provide effective end user support.

5. Convenient Access: Users can access their files from a location and device of their choosing, and withoutthe need for specialist software (often a web browser is all that is needed).

1. Connection: Cloud computing relies on an internet connection. If there is an interruption then the organisation’s business may be disrupted.

2. Application Availability: The organisation may be restricted to use only the application suite supplied by the cloud provider. While this may be designed to suit the requirements of many cloud users, it is unlikely to be optimal for any individual organisation’s requirements.

3. Proprietary Lock In: If the organisation is not satisfied with their cloud provider and decides to move to a different one, they may find it difficult to export their data in a suitable format.

4. Security: Cloud storage represents a single target that may attract the attention of cybercriminals. See above for a corresponding advantage.

Google Drive and Dropbox are two file storage and sharing services that are in common use. Both are available to the personal user as well as the corporate user.

• Google Drive enables anyone with a Google account to store files in the cloud; to access them over an internet connection, and to share them privately or publicly. This is a free service, with limited storage capacity, but the user has the option to pay for additional storage as needed.

• Like Google Drive, Dropbox enables anyone with an account to store files in the cloud; to access them over an internet connection, and to share them privately or publicly. Dropbox also offers a free service, as well as the option to pay for an enhanced service.