This document outlines the challenges of managing legacy proxy appliances, which are costly to renew, struggle with increased traffic from cloud apps like Microsoft O365 and are difficult to maintain as data centers shift to the cloud. iboss Zero Trust SASE replaces on-prem proxies, VPNs, and VDI with a cloud-based solution. This improves security, reduces costs and simplifies management. It consolidates multiple security functions, secures remote workers and scales to handle increased traffic.