The world has changed due to Covid-19 situation. Most of us who are working, well we work from home, here by shorted as #WFH, or just WFH.
This gives IT operations lot's of things to think about. Services need to be up and running all the time. There are lot's on employees that is working from home use VPN services, and out this way on companies internet connections.
And this is where the "boring" component is make it's way to your system as a Loadbalancer. If you are running Exchange Onprem, you might need to have two Exchange servers. then you need to have a Loadbalancer for this, so that you load the traffic between the servers.
If you are still running Skype for Business Onprem, well you need Loadbalancer if you run enterprise pool. My advice to you all, do not run DNS Loadbalancing.