Hello Mazhar
Implementing such a scenario is by no means trivial, and is difficult to summarize in a forum post.
However, here are some guidelines to keep in mind as you tackle this problem.
The first thing I suggest is to take a look at Rene’s course on SD-WAN:
This will give you an overview of the necessary background needed for SD-WAN implementation using Cisco’s Viptela solution. Now once you’ve gone over that, you’ll be in a better position to refine your solution and determine more specific questions in your process. By letting us know those more specific questions, we’ll be in a better position to help you in your design.
I hope this has been helpful!
Laz