Fortinet: 3 Key Takeaways for Long-Term Investors

Fortinet announced a revision to its full-year billings guidance during its Q3 2026 earnings call on Oct. 28, 2026. This adjustment reflects the growing demand for integrated security platforms amid the rise of artificial intelligence threats. Management considers network firewalls as the primary defense point for securing AI data flows.

The company has expanded its SASE billings by 31% YoY by incorporating SASE, which merges networking and cloud security into a single platform, eliminating the need for businesses to manage multiple tools. The CEO, Ken Xie, stated that network security is the most crucial foundation for AI security, with the firewall acting as a centralized point of in-line enforcement across enterprise, operational technology, and hybrid cloud environments.

Deals exceeding $1 million increased by 51% in the quarter. These multiyear contracts often undergo phased rollouts, resulting in a temporary delay in recognized service revenue, despite an 14.5% growth in short-term deferred revenue, which represents money collected for services delivered in future quarters. Service revenue grew by 13% to $1.31 billion, facing some challenges due to new large enterprise customers adopting ramp service activations and substantial expansion deals consolidating various existing service arrangements into enterprise agreements.

Billings for operational technology (OT) surged nearly 40%, as specialized hardware and software powering physical infrastructure, such as power grids and factories, face heightened security concerns. Corporate boards are prioritizing security upgrades to shield legacy industrial machinery from automated cyberattacks. Protecting edge and industrial networks has become one of the most pressing issues discussed at board levels of customers today, as reported by Chief Financial Officer Christiane Ohlgart.

Cybersecurity threats are escalating as attackers leverage artificial intelligence to target corporate systems, driving consistent demand for hardware upgrades. While no one can predict the future with certainty, as one speaker mentioned earlier, the AI threat appears to be more durable and sustainable compared to earlier threat drivers.

Chief Operating Officer John Whittle highlighted the company's advantage in custom microchips and unified software, which contribute to lower unit costs than competitors, supporting long-term pricing flexibility.

Looking ahead to 2027, Ohlgart anticipates that Fortinet's total billings and revenue growth will outpace the growth of the overall addressable market.