As someone who's been doing this for the better part of a decade: it's a mirage. No client is going to sign for a "percentage of savings" model when it comes to

As someone who's been doing this for the better part of a decade: it's a mirage. No client is going to sign for a "percentage of savings" model when it comes to cloud. Believe you me, I've looked at this up, down, and sideways; neither the math nor the psychology work out the way you'd hope.