Need more information on High Avaiability

Hello

I am looking for more information on Configuration of High Availability of vCAC as what I can get from Installation Guide is not sufficient and it lacks actual approach for the deployment.

1- What is the load balancer it is being referred in document? Is it windows NLB or some third party Load Balancer?

2- Can current deployed vCAC server be included in Farm Based Deployment?

3- What is the Session Affinity & how can it be configured?

Is there any practical approach for installing vCAC in High Availability scenario?

I would highly appreciate if anyone can provide me information

Br,

MG