RDS 2016 Session Host Capacity

Hello All,

We are planning to configure one session host server with 16 GB RAM with 4 core processor. We need to publish only MS office basic APPS like word, excel, power point, out look etc. Please help us calculate the session host capacity

• What is the optimal number of Session per host and What is the Assumption or Rationale behind that
• How is the Server Sizing calculated and what is the MS reference for that calculation along with assumptions and rationale to arrive at those Sizing
• What is the Redundancy planned to manage the load during the Server Maintenance / failure?
• What is the logic to have the Auto scaling enabled ?

Thanks in Advance

Regards,
Austin Jose