Back in 2007 I wrote a series of papers on how Shadow IT, that was IT that was within the business, was one of the biggest trends facing IT. 'Out of Darkness Cometh Light' was about how Mashup developed applications on a managed infrastructure could help IT departments deliver what the business demanded and stay relevant. 'From Person to People and from Systems to Service' talked about the need for increased collaboration and a more seamless experience based on the service you wanted not the system you interacted with. Back then there was one company who had most to lose by this transformation, Microsoft, and there is always a question with a dominant player on whether they can actually make the change to a new reality.
Well since then we've seen Azure created and a whole raft of SaaS offers and now we have Windows 8. Windows 8 is a key product for Microsoft as arguably its the first time since they created Windows XP that the consumer view of their products has gained the ascendancy. This article on the Register actually talks about how the IT department could be irrelevant to Microsoft's strategy on Windows 8, now I might not go that far but its certainly the reality that the CIO who doesn't have BYOD (Bring your own Device) at the heart of their strategy is will be doing exactly what the CIO who buried their head in the sand over SaaS is doing... looking for a new job.
When Microsoft's strategy is consumer first for the enterprise then its time for the IT department to accept that the world has changed, the business can procure and deliver IT services with or without their group IT team, you are either with the change or going to be run over by it.