What is considered a typical VMware SD-WAN use case?

An administrator is looking for a cost effective model of hardware-based Edge for some branch offices. The device must be mounted in rack cabinet, and to meet performance requirements and projected growth, the appliance must support up to 2 Gpbs bandwidth.
Which Edge modelsatisfies these requirements?

Due to very strict security policies an enterprise customer is looking for an on-premises deployment of the VMware SD-WAN Orchestrator and Controllers. Customer data is not expected to flow through this Controller, however it is desirable that management plane traffic towards the Orchestrator coming from VMware SD-WAN Edges can take the overlay tunnels through this controls.
What are some of the needed steps to achieve the requirements above?

A network administrator is concerned about an Edge that may be approaching its documented limit for the number of simultaneous tunnels. The historical data showing the number of simultaneous tunnels over the time needs to be checked.
Where can this historical data be found?

A customer is using VMware SD-WAN and has branches in different continents where the Edges are assigned with local Gateways.
Which Gateway should be used so all the branches can build tunnels with one another?