At a function level, what Procurement does (buying goods or services from external sources) hasn’t changed much and will not. What does change is the world that Procurement operates in? Procurement does not operate in a vacuum so how it does the job has to reflect his times (and continuously do so). Also, it has to take into account with/for whom it does it. It is about addressing expectations, serving stakeholders, attracting talent, and much more.
“Bringing the changes to life”
You’ve managed to get yourself into a good strong position by having defined the change impacts to understand what it means, you’ve built a solid change plan and mapped it to the various stakeholder groups and you’ve built your change networks and established control rooms to regularly measure feedback.