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This text is wrong:
"But that revolution is over. The technologies are deployed. The users are trained. The data centers are built. In recent years, no new IT innovations have arisen that can transform businesses the way corporate networks or email groupware or the Web did a decade ago. Nearly everything IT is doing now is tweaking and incremental upgrades to existing technologies."
Because there is much more to add. It's just beyond your mental abilities. This is common mistake in technology...