The part that can't go down.
When every interaction depends on the platform underneath it, reliability isn’t a feature. It’s the requirement. 99.999% uptime, owned voice infrastructure across 140+ countries, 88+ certifications, and AI governance built into the platform — the foundation CFOs and CISOs verify before signing.
Trusted by leading enterprises across every industry
Capabilities
Built for what your CX operation can’t afford to get wrong.
The foundation underneath every interaction has to stay available, pass scrutiny and keep AI under control. Core is built to do all three.
Stay up when demand goes up
Carrier-grade voice infrastructure for enterprises that can’t afford downtime — backed by 99.999% uptime SLA and an owned global voice network.
- 99.999% uptime SLA, contractually backed
- Global voice network in 140+ countries, owned since 2001
- Public-cloud microservices that scale with demand
- WebRTC, browser-native voice and video
Be audit-ready without slowing down
Independent certifications and transparent controls help security, compliance and procurement teams verify what they need.
- 88+ certifications, incl. SOC 2, HIPAA, PCI-DSS, GDPR, TCPA
- Certified caller & number reputation (STIR/SHAKEN)
- Five9 Trust Centre: live status, transparent posture
Put AI to work without losing control
Observe, audit and control every AI agent at enterprise scale — governance built into the platform, not bolted on.
- Full agent observability & audit trails
- Guardrail controls on every AI agent
- Human-in-the-loop handoff with full context
- Continuous PII redaction across 100% of transcripts
Security & Compliance for Contact Centres
Proven where reliability matters most.
See how Five9 customers run high-volume, mission-critical contact centre operations on a platform built for scale, resilience and real-world complexity.
Wyndham Hotels & Resorts
9,200+ hotels, 95+ countries, one always-on foundation. Wyndham needed a platform that wouldn't buckle under global, multi-brand scale — Five9 gave them the integrations and AI capabilities to serve as the foundation for their future state.
Five9 had the integrations and AI capabilities to serve as the foundation for our future state.
Omaha Steaks
Holiday demand doesn't wait, and legacy systems couldn't keep up — manual payments and call surges meant long waits right when customers expected the most. With the Five9 carrier-grade infrastructure, Omaha Steaks scales for seasonal peaks without the platform becoming the bottleneck.
Five9 gives us the flexibility and efficiency to meet customers where they are, without delay.
Exact Sciences
A global cancer-diagnostics leader handling sensitive patient data needed a cloud contact centre that could move fast without cutting corners on trust. Five9 delivered the scale and AI governance to handle patient demand the way a regulated healthcare environment requires.
Five9 is integral to our future, and we look forward to working on that future together.
Yopa
A fast-growing estate agency, Yopa overcame scaling challenges with Five9 — using automated dialing, personalized IVR, and seamless Salesforce integration to reach more prospects.
Five9 gave us flexibility and scalability, automated dialing, and robust, seamless Salesforce integration.
Why Five9
Why Core on Five9
The hard part isn’t keeping things running when everything goes right. It’s having a foundation you can count on for the interactions you can’t afford to get wrong. Five9 Core brings the reliability, security and control those moments demand. We were built for the hard part.
Decades of contact centre infrastructure
Cloud-native since 2001, Five9 combines WebRTC and SIP expertise with owned global telco infrastructure across 140+ countries.
Independent validation you can verify
88+ certifications, audit-ready controls and transparent security practices give security and compliance teams evidence they can verify.
Governance that stays with AI in production
Observability, audit trails, policy controls and PII redaction help teams govern AI agents as they move from experimentation into production.
Go deeper
Run the foundation your operation depends on.
Configure, monitor and secure the infrastructure behind your contact centre, with the tools to verify platform health and step in when needed.
FAQ
Frequently asked questions about Five9 Core
Common questions about the always-on foundation — reliability, compliance and AI governance — underneath the Five9 platform.
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Five9 Core is the platform foundation beneath every other Five9 product: security and compliance for contact centres, plus the reliability and AI governance that keep voice, digital and AI Agent interactions running without interruption. It combines owned voice infrastructure, a 99.999% uptime SLA and 88+ independent certifications, and governance built in for every AI Agent at enterprise scale. It's the layer CFOs and CISOs verify before signing, not a feature they take on faith.
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Five9 Core is the platform foundation beneath every other Five9 product: security and compliance for contact centres, plus the reliability and AI governance that keep voice, digital and AI Agent interactions running without interruption. It combines owned voice infrastructure, a 99.999% uptime SLA and 88+ independent certifications, and governance built in for every AI Agent at enterprise scale. It's the layer CFOs and CISOs verify before signing, not a feature they take on faith.
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Five9 delivers security and compliance for contact centres through 88+ independently audited certifications, including SOC 2, ISO 27001, HIPAA, PCI-DSS, GDPR and TCPA. Each certification is independently audited, and the controls behind them are documented and kept current, not a one-time snapshot. Security, compliance and procurement teams can verify what they need without slowing down a deal.
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Five9 has owned and operated its global voice network since 2001, rather than routing every call through a patchwork of outside carriers. Five9 Global Voice pairs regional points of presence with a carrier-grade softswitch that dynamically picks the best call path in real time, keeping call paths short and localized in 140+ countries, backed by the same 99.999% uptime SLA that covers the rest of the platform. The result is consistent, low-latency call quality whether the agent and customer are in the same city or on opposite sides of the world.
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The Five9 Trust Centre, at five9.com/trust, is the single place to check security and compliance for contact centres, including certification status, plus live platform status. It's built for transparency: security and procurement teams can self-serve the documents they need instead of opening a ticket and waiting.
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Yes. The Five9 Admin Console gives your team a single pane of glass to provision users through your identity provider, enforce SSO/MFA and zero-trust permissions and manage your entire number inventory — self-service, without a ticket queue.
The platform that’s worked for two decades — ready for the next one.
Cloud-native since 2001. Carrier-grade voice. Independently certified. AI you can govern. Because whatever you build next still has to work when things get hard.