Feasibility study - Centralized service for UAT servers

Hi , i have assigned to a project , where i have to change the existing UAT infrastructure. There are 3 UAT servers

Current infrastructure - UAT server have 4 docker containers running (web , MySQL , phpmyadmin & RabbitMQ)

proposed infrastructure - UAT server need to have 3 docker containers (web , mysql & phpmyadmin) , i have to separate Rabbitmq container from 3 UAT servers and make the RabbitMQ container as a centralized one for all 3.

So for this project, first i have to do a Feasibility Analysis, So where do i get enough information on this. TIA