NEW YORK (TheStreet) -- Monday's historic closing of stock markets is frustrating this tech reporter. Angry clouds have shut down Wall Street.But it's a good day to review what we should know about cloud computing, what it is today, what it will be tomorrow and what that means for the markets. Cloud remains misunderstood by many. It's not the IBM Service Bureau of the 1960s. It's not timesharing. It's not even Software as a Service, one of the great buzzwords of the last decade. It's a combination of three technologies:
- Virtualization, so it doesn't matter what operating system something was written on. One piece of hardware can be running many jobs, or a job can be running on many systems. Distributed computing, the parsing of bits of a job among many systems, automatically. This lets jobs scale and use as much hardware as needed to get the job done. Internet resiliency. This article lives in thousands of places, right now, because it's cached on many servers and on many clients. The cloud lets computing resources be copied the same way.