Case Study: John Holland achieves a 50% reduction in networking costs with Zscaler Zero Trust Exchange

John Holland Reduces Networking Costs by 50% using the Zscaler Zero Trust Exchange

John Holland, an Australia-based construction and infrastructure company with 5,000+ employees across 120+ locations, needed a more agile, scalable IT model to support hybrid work and rapid project-site provisioning. Its legacy MPLS and perimeter security approach backhauled traffic, slowed application access, and relied on hundreds of firewalls that couldn’t inspect encrypted traffic, creating cost and security challenges.

John Holland implemented the Zscaler Zero Trust Exchange, rolling out zero-trust access in about a week for ~6,000 users and integrating with Microsoft tools to automate endpoint posture and provisioning. The move eliminated hundreds of firewalls, cut networking costs by 50%, processed ~402 TB of traffic while blocking 122,821 threats in three months and preventing ~98 million policy violations—improving performance, security, and operational efficiency.

John Holland

Kier Morrison

General Manager of IT Technology Operations