Research on how to create a virtual DMZ with Mutli-WAN (Multiple Internet Connections) for Inbound and Outband traffic.
The theory is that a user will hit a url called https://access.* which will have multiply A records pointing Public IP Address that are provided by different Internet Service Providers with NAT to the Datacenter Router, that are forwarded to virtual VIF. Setup a Subdomain with a HTML forwarder to a Dynamic DNS or Public IP address.
<meta http-equiv="refresh" content="1;url=DOMAIN.com">
window.location.href = "http://DOMAIN.com"
<!– Note: don’t tell people to `click` the link, just tell them that it is a link. –>
If you are not redirected automatically, follow the <a href=’unitycloud.com’>link to example</a>
Reference Active/Active Design