What Zscaler actually does

Two products, one platform. ZIA (Zscaler Internet Access) replaces your on-prem web proxy and secure web gateway. ZPA (Zscaler Private Access) replaces your VPN with zero-trust application access.

Traffic routes through Zscaler’s cloud — 150+ data centers globally. Policy enforcement happens at the edge, not in your data center.

Who it’s best for

Enterprises with distributed workforces replacing legacy proxy appliances
Organizations moving to zero-trust architecture for internal application access
Companies with compliance requirements that need SSL inspection at scale
IT teams tired of managing VPN concentrators and capacity planning

Pricing reality check

Zscaler is enterprise-priced. The per-user cost varies significantly based on which bundles you select (Business, Transformation, Unlimited) and your negotiation leverage. Expect meaningful investment, but also meaningful reduction in hardware and management overhead.

The total cost of ownership argument is real — if you’re currently running Bluecoat/Symantec proxies or Cisco ASA VPNs, the operational savings from eliminating that hardware can offset the subscription cost.

Alternatives to consider

Palo Alto Prisma Access — Comparable SASE capability. Better if you’re already in the Palo Alto ecosystem.
Netskope — Strong DLP and CASB integration. Often more flexible on pricing.
Cloudflare One — Aggressive pricing. Newer to the market. Good for organizations that want to start small.

The Charting Cyber take

Zscaler is the incumbent in cloud-native SASE for a reason — the platform works, the global coverage is strong, and the zero-trust model for internal apps (ZPA) is genuinely better than VPN for most use cases.

The challenge is cost and complexity at smaller scale. If you have fewer than 500 users, evaluate Netskope and Cloudflare One before committing. Above 1,000 users replacing legacy infrastructure, Zscaler should be on every shortlist.