Lies, damned lies and statistics: adoption of ITIL
Seems like about a third of organisations in the USA have adopted ITIL and another third plan to [when the survey doesn't mention country it usually means the USA, which remains oblivious to the rest of the world: World Cup baseball anyone?]. And only 6% have a single CMDB, or I should now say CMS.
This one says "71 percent of respondents are implementing ITIL as a strategy"
This one says 40% have done ITIL and another 30% plan to do so.
This one by Axios says 34% have adopted and another "third" plan to.
Symantec say "ITIL remains early in the adoption curve with only 18 percent reporting that ITIL is a reality in their organization. More than half (52 percent) say that ITIL is an ongoing process, while 22 percent will implement ITIL over the next year"
This recent survey says less than third of data centres have done so. The survey by Aperture Research Institute says 29% of "100 data center organizations across a range of industries including banking, government, insurance, healthcare, data services, retail, and telecommunications" have implemented ITIL.
Aperture went on to find "Only 6% of data center managers surveyed use a single system to document everything", i.e. a CMDB. There is a reason for this. Everyone wants it but it is just too hard and expensive for most organisations.
The question that goes begging is just what this one third have actually done in order to have "adopted" ITIL: one process, one maturity level improvement? Ten processes up three levels? Project commenced or completed? I'm betting that the proportion of serious "ITIL shops" that are solidly ITIL across the board is more like 10%
Made in New Zealand 
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If one were daft enough to attempt CMDB
If one were daft enough to attempt CMDB then one could do a lot worse than reading this blog first to assemble the "CMDB dream team"