On Dog Years, Cloud Years, and A-years

Innovations are commonly judged by how fast they reached 50 million users (Radio, 38 years; TV, 13 years; Internet, 4 years; iPod, 3 years, etc.). Another way to look at this is by time equivalents: If one Dog Year equals 7 human years than how many years of traditional IT do we travel in one Cloud Year?
This cloud year we saw quit a lot of change – also from existing mega vendors entering the cloud market – but did it match 7 years of progress in traditional IT (taking us roughly from SOA till today)? And do we really expect the next three years to bring as much change as we saw since the days of client-server or the next seven years to be the equivalent of the journey from the days of the mainframe to today?

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