8x8
One platform for cloud telephony, contact centre and communications APIs.
- Connectivity & Broadband: not offered
- Telephony, VoIP & Mobile: offered
- Managed IT & Cyber Security: not offered
- Business Energy: not offered
Reviewed June 2026
8x8 is a US-headquartered cloud communications provider, based in Campbell, California and listed on Nasdaq as EGHT, with substantial UK operations. Its platform pulls together unified communications (UCaaS), contact centre (CCaaS) and communications APIs (CPaaS) into a single "XCaaS" architecture, underpinned by a 99.999% financially-backed uptime SLA. It focuses purely on communications rather than positioning itself as a full-stack telecoms or IT supplier.
Our verdict
8x8 scores 56/100 (Fair) and ranks #11 overall. Mid-market and enterprise organisations, particularly those running multiple sites, contact-centre-heavy operations or international teams, that already have solid connectivity in place and want one well-accredited cloud platform covering phone, UC and contact centre.
Strengths
- Single integrated platform spanning UCaaS, CCaaS and CPaaS, reducing the need for multiple vendors
- Strong, financially-backed 99.999% uptime SLA and broad security/compliance accreditation set (ISO 27001, PCI DSS, Cyber Essentials Plus)
- Mature, feature-rich cloud contact centre with AI analytics, omnichannel routing and predictive dialler
- Global reach with international calling plans - good for multi-country and multi-site enterprises
- Deep CRM and Microsoft Teams integration
- Publicly listed, established vendor (founded 1987, ~1,950 employees, ~USD 729m revenue) with a real UK presence and UK support team
Watch-outs
- Communications-only: does not provide the underlying connectivity (broadband/FTTP/leased lines), managed IT/MSP, cyber security services or energy - buyers needing a one-stop telecoms+IT supplier must source those elsewhere
- Mixed customer sentiment online: 3.2/5 on Trustpilot with recurring complaints about billing, unexpected/early-termination charges and difficulty reaching support
- Call quality depends entirely on the customer's own internet connection, which 8x8 does not supply
- Pricing and contracts are largely quote-based and can carry multi-year commitments; less transparent for small buyers
- Reported operating losses in recent years raise some questions about long-term financial trajectory despite scale
How it scores
Services
Telephony, VoIP & Mobile
- Cloud business phone system / hosted VoIP (8x8 Work)
- Unified communications - voice, video meetings, team chat, SMS
- Microsoft Teams integration (direct routing / native dialler)
- Omnichannel cloud contact centre (CCaaS) with skills-based routing, IVR, predictive dialler
- AI features - speech/interaction analytics, agent assist, quality management
- Call recording and media storage
- CPaaS communication APIs - SMS, voice, chat apps, video, verification/2FA
- Global PSTN calling plans with zone-based unmetered calling
- CRM integrations (Salesforce, Microsoft Dynamics, Zendesk)
Accreditations & partners
Accreditations
- ISO/IEC 27001:2022 (incl. ISO 27017 & ISO 27018 control sets)
- ISO 9001
- ISO 14001
- PCI DSS (AoC)
- UK Cyber Essentials Plus
- CSA STAR Level 1
- SOC 2
- HIPAA
- FISMA/NIST
- UK G-Cloud supplier (Digital Marketplace)
Key partners
- Microsoft (Teams)
- Salesforce
- Microsoft Dynamics
- Zendesk
- ServiceNow
- UK channel resellers (e.g. Opus, Britannic, Insight)