> (2) I can do this on my own time and keep some % of the savings for myself as a reward
This is a textbook case of perverse incentives.
> (2) I can do this on my own time and keep some % of the savings for myself as a reward
This is a textbook case of perverse incentives.
Theoretically, your company could reduce their commitment to 4M next year, but the AWS sales would start negotiating hard against it, like "you will not get the same discount with less commitment".
Ironically, I was asked by a manager some time ago if we can imagine using some (more) resources from AWS to reach the next spending commitment. If you're just below the threshold, it's probably inconvenient.
EDIT: To give some context: you can only do this, of course, when you know that you're not really wasting resources, otherwise you end up with just burning money to save little to no money :)
Even if you have one year reservations on your instances, starting service migrations/deprecations now would pay off quickly enough. Your commitment expires in 6 months, on an average basis.