Case Study: ATN International secures operations, eliminates VPNs, and accelerates troubleshooting with Zscaler Zero Trust Exchange

ATN International Secures Operations and Improves Efficiency with the Zscaler Zero Trust Exchange

ATN International, a telecommunications provider serving remote markets, struggled with on‑premises security and legacy VPN appliances that couldn’t scale for a remote workforce, AWS migration, or frequent M&A activity. Slow VPNs, risky split‑tunneling workarounds, and limited cloud integrations created poor user experience, rising support tickets, and increased security exposure.

ATN implemented the Zscaler Zero Trust Exchange (ZIA, ZPA, ZDX) to replace VPNs with least‑privilege access, enable direct‑to‑internet traffic inspection, and leverage AI plus deep Microsoft integration for faster troubleshooting. The deployment secured all 2,500+ users, eliminated VPN‑related help tickets, cut issue resolution from hours to minutes, accelerated and de‑risked M&A onboarding, and blocked threats before endpoints were impacted.

ATN International

Richard Casselberry

VP, IT Security, Architecture & Compliance