Cisco Revenue Crossed $14 Billion in Q3 FY2026

Cisco Systems reported in its Q3 FY2026 earnings (February through April 2026, results published May 14, 2026) that revenue reached $14.15 billion, a 7 percent year-over-year increase from $13.24 billion in Q3 FY2025 and the first quarter in Cisco’s history in which quarterly revenue exceeded $14 billion — a milestone that reflects the commercial integration of Splunk, acquired by Cisco in March 2024 for $28 billion and now contributing fully to Cisco’s Security and Observability reporting segment, alongside the organic growth of Cisco’s AI infrastructure networking product lines (the Silicon One application-specific integrated circuit family, the Nexus 9000 series data centre switching platform, and the Catalyst 9000 campus networking portfolio) as enterprise and cloud provider customers expand their AI training and inference network infrastructure to support GPU cluster interconnects and east-west traffic volumes that the AI workload generation of 2025 and 2026 created at a scale that the Ethernet-based data centre network architectures built for traditional CPU-compute workloads were not designed to carry at the bandwidth and latency profiles that AI training cluster communication patterns require. Cisco’s Q3 FY2026 investor filings show annualised recurring revenue reaching $30.1 billion at the end of Q3 FY2026, up 19 percent year over year from $25.3 billion at the end of Q3 FY2025, with the ARR acceleration driven by the Splunk integration converting Splunk’s software subscription and cloud ARR ($4.2 billion at the time of acquisition) into Cisco’s reporting perimeter alongside organic ARR growth in Cisco’s Security Cloud (Duo Security multi-factor authentication, Cisco Umbrella secure web gateway, Cisco Firepower next-generation firewall, and Cisco XDR cross-domain threat detection) and Cisco’s Observability platform (AppDynamics application performance monitoring, ThousandEyes network intelligence, and the Splunk-integrated security information and event management platform that Cisco is positioning as the unified security and observability data fabric for the large enterprise). Cisco’s product revenue in Q3 FY2026 reached $8.1 billion, with the Networking segment (data centre switching, campus networking, wireless LAN, and routing) generating $5.3 billion of that total — with AI data centre switching growing at 41 percent year over year as cloud infrastructure operators and enterprise data centre teams ordered Cisco Nexus 9000 series switches with 400G and 800G Ethernet ports to interconnect GPU clusters running AI training workloads, generating Q3 FY2026 AI infrastructure switching orders of approximately $900 million that represented the single fastest-growing product category in Cisco’s networking portfolio by order growth rate as the AI compute infrastructure buildout created a demand environment for high-bandwidth Ethernet switching that has not been seen since the cloud hyperscalers’ initial data centre expansion phase in 2015 to 2018. Cisco’s Services segment — which includes technical support contracts, professional services for network design and implementation, and managed services for Cisco security and collaboration platforms — generated $6.05 billion in Q3 FY2026, representing 43 percent of total revenue and continuing the long-term shift in Cisco’s revenue mix from hardware product margins to subscription and services recurring revenue that Cisco management has guided as the basis for the ARR growth rate outpacing total revenue growth in FY2026 and FY2027. Non-GAAP operating income reached $3.98 billion in Q3 FY2026, a 28.1 percent non-GAAP operating margin, with free cash flow of $3.31 billion — reflecting the combined operating leverage of Splunk’s software gross margins (approximately 82 percent software gross margin, materially above Cisco’s historical blended hardware and software margin) adding to Cisco’s existing subscription software business’s margin profile in a way that the integration’s $28 billion acquisition cost is beginning to validate through Q3 FY2026 operating income growth of 21 percent year over year as the Splunk revenue base scales within Cisco’s distribution. Palo Alto Networks’ revenue crossing $2 billion in Q3 FY2026 frames Cisco’s most direct competitive dynamic in the enterprise security market: Cisco’s Security Cloud — built on the Duo MFA, Umbrella SASE, Firepower NGFW, and Cisco XDR platform that Cisco has assembled through the Sourcefire, Meraki, and Duo acquisitions — competes with Palo Alto Networks’ Strata and Prisma platforms for the enterprise NGFW and SASE budget, with the primary differentiation being that Cisco’s security platform is deeply integrated with the enterprise’s existing Cisco network infrastructure (where the campus switches, wireless access points, and routers that Cisco sold to the enterprise over the preceding decade generate telemetry into Cisco XDR and Cisco Security Cloud at no additional sensor cost because the network infrastructure itself becomes the threat detection layer), while Palo Alto Networks’ platform requires the enterprise to deploy dedicated Palo Alto Networks appliances or cloud-delivered security services as a separate security enforcement layer above the underlying network infrastructure regardless of vendor. CrowdStrike’s revenue crossing $1 billion in Q1 FY2027 defines the endpoint detection competitive relationship with Cisco’s security portfolio: Cisco XDR — the cross-domain detection and response platform that ingests telemetry from Cisco’s network infrastructure, Cisco’s endpoint security agent (Cisco Secure Endpoint, formerly AMP for Endpoints), and third-party security sources — competes with CrowdStrike Falcon as the primary AI-powered threat detection platform for enterprise security operations centres, with Cisco’s differentiation being the native network telemetry from the enterprise’s existing Cisco infrastructure that flows into Cisco XDR’s detection engine without requiring a separate sensor deployment on every network segment, while CrowdStrike’s differentiation is the depth of endpoint behavioural analytics on the Falcon agent that Cisco Secure Endpoint has not historically matched in the enterprise EDR benchmark evaluations that inform CISO endpoint security procurement. Cloudflare’s revenue crossing $600 million in Q1 2026 contextualises the SASE competitive positioning: Cisco’s Secure Access — the rebranded SASE solution combining Cisco Umbrella (secure web gateway and DNS-layer security) with Cisco Duo (zero trust network access) and the Meraki SD-WAN platform — competes with Cloudflare One and Palo Alto Networks’ Prisma SASE for the enterprise VPN replacement market, with Cisco’s advantage being the integration of the SASE enforcement layer with the enterprise’s existing Cisco networking infrastructure (reducing the deployment complexity for enterprises that already run Cisco campus networking and WAN) against Cloudflare One’s advantage of a globally distributed network with lower latency for geographically dispersed enterprise users who are not concentrated in Cisco’s network point-of-presence topology. Fortinet’s Security Fabric revenue crossing $2 billion in Q1 2026 establishes the mid-market NGFW competitive relationship: Fortinet’s FortiGate product line competes with Cisco’s Firepower NGFW in the enterprise and mid-market network security appliance segment, with the primary competitive differentiation being that Cisco’s Firepower NGFW management integrates with the broader Cisco Security Cloud (sharing threat intelligence between the NGFW, Cisco XDR, Cisco Umbrella, and Splunk SIEM within a unified security policy console) while Fortinet’s Security Fabric provides a comparable unified management architecture at a materially lower per-unit hardware cost that makes Fortinet’s NGFW the dominant choice in the mid-market and distributed enterprise branch office segment where Cisco’s enterprise-tier pricing exceeds deployment budget.

Cisco AI Defense — the enterprise AI security product released in January 2026 that monitors, detects, and enforces policy on the AI model deployments that enterprise teams run within the enterprise’s cloud infrastructure (detecting prompt injection attacks against deployed large language model APIs, monitoring AI model output for policy violations and data leakage, and enforcing access control policies on who within the enterprise can query which AI model endpoints) — reached 1,100 enterprise customers at the end of Q3 FY2026, with commercial adoption concentrated among regulated-industry customers (financial services, healthcare, critical infrastructure) where enterprise security teams are responsible for ensuring that the AI models the enterprise deploys as internal productivity tools and customer-facing automation do not process or leak sensitive data through AI inference pathways that the enterprise’s existing data loss prevention controls were not designed to monitor. Cisco Webex AI — the AI-powered enterprise collaboration platform that incorporates real-time AI transcription, automated meeting summaries, action item extraction, and live translation across 34 languages within the Webex video conferencing and messaging environment — reached 28 million monthly active AI assistant users at the end of Q3 FY2026, with the AI capabilities generating Webex subscription retention improvements as enterprises that adopted Webex AI features reported 22 percent lower monthly churn on their Webex collaboration seats than the Webex base that had not adopted the AI assistant features — a retention signal that Cisco management cited as the primary commercial justification for the Webex AI investment’s impact on Collaboration segment ARR stabilisation against the competitive pressure from Microsoft Teams (which integrates Microsoft Copilot as the AI assistant layer for Microsoft 365 enterprise customers at incremental cost within their existing Microsoft 365 subscription). Cisco’s Silicon One — the Cisco-designed application-specific integrated circuit that powers Cisco’s highest-capacity routing and switching platforms (the Cisco 8000 Series routers and the Nexus 9808 data centre switch) and that Cisco sells as a merchant silicon alternative to Broadcom’s Tomahawk and Jericho ASIC families — generated AI infrastructure revenue through the cloud provider segment where hyperscaler customers (Amazon Web Services, Microsoft Azure, Google Cloud) purchase Cisco Nexus 9000 switches powered by Silicon One to build the Ethernet fabric interconnecting their GPU compute clusters for AI training and inference at the rack, pod, and data centre scale, with Cisco’s AI infrastructure switching order book at the end of Q3 FY2026 reflecting 12-month backlog coverage that indicates the data centre Ethernet switching demand for AI workload interconnects is at a sustained order rate rather than a pull-forward cycle. Gartner’s 2026 Magic Quadrant for Data Center Networking positions Cisco as a Leader for the 12th consecutive year, with Gartner’s evaluation citing Cisco’s Silicon One ASIC roadmap (supporting 400G, 800G, and the announced 1.6T Ethernet port speeds on the next-generation Nexus platform), the ACI (Application Centric Infrastructure) software-defined networking fabric’s integration with Kubernetes and container orchestration platforms, and the Cisco Validated Designs programme (which provides enterprise customers with pre-tested AI data centre reference architectures combining Cisco Nexus switching, Cisco UCS compute, and Cisco storage networking) as the strongest competitive differentiators against Arista Networks (whose EOS network operating system and CloudVision network management platform have gained hyperscaler customer share in the campus-free cloud data centre segment), Juniper Networks (whose Apstra intent-based networking automation platform targets the operator complexity reduction use case), and the white-box switching vendors (Edgecore, Celestica) whose open network operating system deployments compete with Cisco’s closed proprietary NOS in the hyperscaler ODM segment where total cost of ownership rather than management capability drives procurement decisions. Reuters technology coverage of Cisco’s Q3 FY2026 $14 billion milestone examined the Splunk integration’s contribution to the revenue trajectory: Reuters noted that while Splunk’s ARR contribution to Cisco’s $30.1 billion total ARR is the primary driver of the 19 percent ARR growth rate that outpaces the 7 percent total revenue growth rate, the market’s assessment of the Splunk acquisition’s strategic value depends on whether Cisco’s unified security and observability platform — combining Splunk SIEM with Cisco XDR, Cisco Umbrella, and Cisco AppDynamics — can displace the enterprise’s existing multi-vendor security operations stack at a sufficient cross-sell velocity to justify the $28 billion acquisition multiple, with Q3 FY2026’s 1,100 Cisco AI Defense customers and the Splunk-integrated XDR cross-sell pipeline representing the early commercial evidence that management will need to sustain through FY2027 and FY2028 to validate the integration thesis at the revenue contribution level that the acquisition price implies. Cisco’s FY2026 full-year guidance — revenue of $55.3 to $55.9 billion, implying approximately 5 to 6 percent year-over-year growth including the full Splunk contribution, with non-GAAP EPS of $3.68 to $3.74 — reflects management’s confidence that AI infrastructure networking demand, Splunk ARR conversion, and Webex AI retention improvements will sustain mid-single-digit revenue growth through Q4 FY2026 (May through July 2026) as the networking product cycle transitions from the post-pandemic inventory correction (which suppressed Cisco networking product revenue through FY2024) to a normalised AI-infrastructure-driven demand environment that Q3 FY2026’s 41 percent AI switching growth rate confirms as underway at the data centre scale.

What Cisco AI Infrastructure Networking Revenue Signals About Data Centre Ethernet at AI Workload Scale

Cisco’s quarterly revenue crossing $14 billion in Q3 FY2026 — driven by 41 percent year-over-year AI data centre switching growth, 19 percent ARR growth from the Splunk integration and Security Cloud expansion, and 1,100 Cisco AI Defense enterprise customers in the first quarter after the product’s general availability — signals that the incumbent data centre networking platform relationship is capturing a disproportionate share of the AI infrastructure build-out spending relative to its share of the overall enterprise networking market, because enterprises that already run Cisco Nexus switching in their data centres are extending their existing Cisco switching fabric with AI-optimised high-bandwidth ports rather than ripping out their existing Cisco network infrastructure to deploy an alternative AI-native networking platform from a competing vendor. The AI infrastructure switching dynamic’s commercial implication for data centre networking strategy is that the installed-base advantage of the dominant switching vendor (Cisco in enterprise data centres, Arista in hyperscaler-adjacent cloud data centres) generates AI infrastructure revenue from customers who would otherwise require a competitive displacement to switch vendors, and that the 41 percent growth in Cisco AI switching at the Q3 FY2026 $900 million quarterly order level confirms that enterprise AI data centre demand is reaching a commercial scale at which Cisco’s traditional data centre customer base — rather than the hyperscaler cloud providers who have historically driven AI networking demand at the leading edge — is becoming a primary growth driver for AI infrastructure switching revenue as enterprise AI workload deployments cross the threshold at which GPU cluster interconnect bandwidth requirements mandate high-density 400G and 800G Ethernet switching upgrades that the enterprise’s existing 100G campus-era Cisco switching infrastructure cannot accommodate at the AI training and inference traffic volumes the enterprise’s 2026 AI deployment plans generate.