Zscaler offered a secure web gateway (SWG) as a service. It solved an urgent problem – users wanted direct internet access from anywhere without the need to backhaul to corporate VPN concentrators appliances or data center firewalls. With the public Internet being the underlying network, Zscaler only option was to build its solution as an overlay proxy. Following SWG came the need for CASB, which used the same proxy architecture applied to SaaS applications. Lastly, ZTNA used the same approach to access private apps in datacenters. This progression created a multibillion-dollar security company. But, as these various products appeared on scene, so did complexity. Enterprises had to maintain their MPLS networks, SD-WANs, and network firewalls and layer on top of them the SWG, CASB, and ZTNA proxies. Migrating your Datacenter Firewall to the Cloud| Download the White Paper This complex reality was what Gur Shatz and I set out to change as we launched Cato Networks in 2015.