Cloud computing. What the heck does it mean, anyway? If you're confused by the phrase, you're not alone, because it's as prevalent now as the air we breathe. Without knowing it, you use cloud computing-based services everyday! Still, many aren't aware of just what cloud computing is and why it even matters. The basics of cloud computing is nothing new -- It's similar to the days of mainframe timesharing, where companies shared resources to process data for their needs. The difference today is that many cloud computing-based services and solutions run on thousands of low-cost PCs which are glued together by sophisticated software and networks.

So, here's a crash-course on cloud computing in three, two, one ...

My brother's really psyched that he got a new job with a company that has, as he tells it, the premiere "SOA" application. Rather than seem like the clueless sister, can you give me a brief rundown on what SOA is all about so I can come across as more knowledgeable? Thanks!