Our company uses the solution for various clients.
For one customer, we use the solution for global load balancing, GSLB, and sending DNS requests to the primary DNS.
For another customer, we use the solution as the ADC for data centers to protect all websites and use Layer 7 to provide DDos protection and load balancing for web traffic.
For a third customer, we use the solution as a GSLB but rented a data center rack to deploy as a virtual machine with all DNS requests going to the cloud and then to the customer.