The world of Information Technology has changed a lot during my career, but in some ways, many things remain the same. There are still mainframes in use, and plenty of jobs. Lots of companies maintain their infrastructure in data centers, even though some are turning to private clouds for their infrastructure. There are plenty of jobs in that area as well.

There is a trend to consolidate resources into a bucket and then allocate those as needed for various applications and services. This is what mainframes do, albeit at a very high degree of reliability (and cost). The cloud seeks to replicate this, not with high reliability, but with redundancy, expecting systems to fail. In fact, plenty of the data centers these days involve a lot of similar hardware systems tied together with software, with failed systems being left in place rather than replaced.

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