Traditionally, software has run on a single computer's hard drive, but as Internet connections became faster and more reliable, companies started to deliver software as an online service by using the computing power of the "cloud," a network of powerful computer servers accessed over the Web.
It allows the developer to focus purely on writing an online application versus worrying about data center failures, power outages or other potential problems.
Research firm IDC expects spending on cloud computing services to grow nearly threefold to about $42 billion by 2012.
Cloud Computing Companies:
- Amazon
- Saleforce
- Microsoft
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