Replacing MPLS with SD-WAN

Hello, Forum.
I am writing down the new requirements for a Networking Tender.
Now, this enterprice works with MPLS, and has a Datacenter with all the servers and services deployed there.
The enterprice is managing to migrate to the Cloud next year. The datacenter will be almost useless.
Is correct that I ask for a full SD-WAN solution in the tender, or should I keep the MPLS with some Internet Improves? I don’t have SD-WAN experience, so, I don’t know how stable will it be.
Thanks for your comments.