Do you check your email online? Share files via the web? Pay off your credit card using online banking or download music? Then you are already using cloud computing services, probably more often than you even realise.
Cloud computing is when hardware and/or software infrastructure and services are made available remotely and connected via a network, which is usually the Internet.
Using the cloud symbol to represent the Internet is not a new idea and dates back almost 20 years. The more recent term cloud computing refers to sketches of clouds to represent networks in computing and communication diagrams.
How does cloud computing work?
Cloud computing eliminates, or at a minimum reduces the time and money an individual or company needs to invest in infrastructure and/or software. Instead of buying a new computer and software license for each new employee, a company can pay a subscription fee and buy the rights to access an Internet-based service, where the company can store its files on remote servers and access any programs it needs. You can store as much or as little as you like in the cloud.
Cloud computing is based on three main models:-
- Infrastructure-as-a-service (IaaS) is the most basic of cloud models and provides mostly virtual servers on a pay-as-you-go basis. Other IaaS offerings include virtual machine image libraries, file-based storage, firewalls, IP addresses and software bundles.
- Platform-as-a-service (PaaS) providers offer a computing platform including an operating system, programming language interpreter and web server which is sometimes scalable, allowing application developers to create customised software without the outlay involved in buying their own hardware and software.
- Software-as-a-service (SaaS) providers offer access to their software online with a login, for example Google Mail or Dropbox. It is usually priced per user and is scalable so it can increase with demand without disruption to subscribers.
Who uses the cloud?
Cloud computing is available for both personal and business use. A Forrester Research study found 40 per cent of small businesses rated cloud services as a high priority for their business. 25 per cent of medium-sized businesses also thought cloud computing was very important for their operations.
You can access the cloud through three different models; the public, private or hybrid clouds. The public cloud is available to the general public and is either free or sold on a pay-per-use model, for example Google and Microsoft can offer access via the Internet only. The private cloud is available to individual companies who prefer to manage their own data rather than hand it over to a third party. Management of the private cloud can be done internally or outsourced and it can be hosted in-house or externally. The hybrid cloud is a combination of two or more clouds and requires cooperation between in-house and cloud infrastructure.
Why choose the cloud?
There are plenty of reasons why companies are choosing to use cloud-based applications and/or store their data in the cloud. Here are just a few of them:-
- Cloud computing reduces the workload of in-house IT staff and the cost of buying infrastructure and maintaining it
- Low upfront costs and pay-per-use means you don’t pay for more than you need
- Email archived in the cloud is backed up automatically
- Cloud services can be accessed from anywhere in the world with just an Internet connection
- Cloud computing is scalable, so as your storage needs grow, it grows with you
SilverDane can archive your enterprise email in the cloud. For more information, visit www.silverdane.com