Compare moving off an existing system

What this group is

Judged on how well it helps you move off an existing system. How broad it is once you have moved is a separate question.

Research class: Migration-centric CCaaS. Leave on-premises or legacy platforms without a big-bang cutover.

Typical buyer, as the research states it: Incumbent-heavy enterprises.

How the research compares this class, in its own words: Migration utility must not be conflated with future-state breadth.

Listed A to Z. Nothing on this page ranks, scores or orders one platform over another.

The platforms in this group

• Alvaria

  • CCaaS
  • Midmarket
  • Enterprise
  • Sizes: Enterprise and upper midmarket, especially outbound-heavy and regulated operations.
  • Strong fit when: Best when the buyer has meaningful Aspect/Noble/Alvaria estate value to preserve while modernizing cloud/WEM/outbound operations.
  • Strong fit when: Best when compliant high-volume outbound is a core business process.
  • Strong fit when: Best when forecasting/scheduling/quality/performance depth materially matters.
  • Strong fit when: Best when mature IVR/self-service tooling and CXP continuity matter.

  Full research · Alternatives to Alvaria · Request an introduction to Alvaria · Validated 24 September 2026

• Avaya

  • UCaaS + CCaaS (US public sector)
  • Enterprise
  • Public sector offer
  • UCaaS + CCaaS: Only through Avaya Government Cloud, for US public sector buyers. For other buyers the research lists Avaya Aura, installed on premises, and no cloud UC product.
  • Public sector offer: US public sector: Avaya Government Cloud. Avaya Aura's installed base includes government.
  • Strong fit when: Avaya Infinity is most differentiated when the buyer wants to modernize an Aura / Call Center Elite estate without forcing a single-step rip-and-replace migration.
  • Strong fit when: Strong fit where enterprise voice, carriers, WEM or on-prem control planes need to coexist with cloud digital, AI and workflow capabilities during a staged transformation.
  • Strong fit when: Strongest where governance, resilience, regional data choices, enterprise integration and controlled modernization matter more than minimizing architecture complexity.
  • Strong fit when: Avaya has meaningful production evidence across global BPOs and can support heterogeneous client technology estates; hard isolation/economics still require current buyer proof.

  Full research · Alternatives to Avaya · Request an introduction to Avaya · Validated 23 September 2026

• Enghouse Interactive

  • CCaaS
  • SMB
  • Midmarket
  • Enterprise
  • Strong fit when: Enghouse is especially rational when the buyer wants to preserve selected on-prem/private-cloud contact-center investments while adding modern cloud/AI capabilities and migrating on a controlled timetable.
  • Strong fit when: CxEngage is a credible public-cloud option when the buyer values API-first extensibility, versioned no-code flows, concurrent-agent pricing and modular WEM/AI.
  • Strong fit when: Enghouse is differentiated where public cloud is not universally acceptable and private/on-prem options create real business value.
  • Strong fit when: Enghouse's long-standing Teams integration and carrier-flexible Microsoft specialization can materially reduce integration friction.

  Full research · Alternatives to Enghouse Interactive · Request an introduction to Enghouse Interactive · Validated 23 September 2026

Strong fit when

Each platform's own statements from the research, side by side.

Alvaria

• Best when the buyer has meaningful Aspect/Noble/Alvaria estate value to preserve while modernizing cloud/WEM/outbound operations.
• Best when compliant high-volume outbound is a core business process.
• Best when forecasting/scheduling/quality/performance depth materially matters.
• Best when mature IVR/self-service tooling and CXP continuity matter.

Avaya

• Avaya Infinity is most differentiated when the buyer wants to modernize an Aura / Call Center Elite estate without forcing a single-step rip-and-replace migration.
• Strong fit where enterprise voice, carriers, WEM or on-prem control planes need to coexist with cloud digital, AI and workflow capabilities during a staged transformation.
• Strongest where governance, resilience, regional data choices, enterprise integration and controlled modernization matter more than minimizing architecture complexity.
• Avaya has meaningful production evidence across global BPOs and can support heterogeneous client technology estates; hard isolation/economics still require current buyer proof.

Enghouse Interactive

• Enghouse is especially rational when the buyer wants to preserve selected on-prem/private-cloud contact-center investments while adding modern cloud/AI capabilities and migrating on a controlled timetable.
• CxEngage is a credible public-cloud option when the buyer values API-first extensibility, versioned no-code flows, concurrent-agent pricing and modular WEM/AI.
• Enghouse is differentiated where public cloud is not universally acceptable and private/on-prem options create real business value.
• Enghouse's long-standing Teams integration and carrier-flexible Microsoft specialization can materially reduce integration friction.

Be careful if

Each platform's own statements from the research, side by side.

Alvaria

• Caution when the buyer wants one clean modern control plane with minimal product-lineage complexity.
• Caution when all processing/support access must remain inside a narrow jurisdiction.
• Caution when autonomous actions can materially change accounts, money, eligibility or regulated outcomes.
• Caution when public rate cards, predictable all-in TCO or aggressive true-down are mandatory.

Avaya

• Avaya can serve greenfield cloud deployments, but its unique migration/hybrid value is less relevant and implementation/contract gravity may be disproportionate.
• Infinity Hybrid intentionally preserves Elite/CMS functions, and WEM can sit in Verint/BYO products; buyers must accept explicit multi-control-plane ownership.
• Minimum commitments, peak-use billing and a 150% monthly threshold before change order can make elasticity materially contract-dependent.
• The core Infinity service target is not a guarantee that Verint, carriers, customer SBCs, hyperscalers and other dependencies share the same availability.
• MCP/agentic action capability is strategically important, but transaction safety must be proven before autonomous authority is granted.
• Current public evidence establishes enterprise scale but not a complete hard limits matrix; buyer-shaped capacity proof is required.

Enghouse Interactive

• Market reach is global, but current CxEngage tenant/application regions are documented as North America and Europe; prove exact workload residency.
• Multiple current Enghouse products are useful for migration but create a product-selection/control-plane discipline requirement.
• Prove the exact dialer product, modes, support and economics; do not infer AutoReach/CCSP/other outbound from generic CxEngage branding.
• Do not transfer CCE/CCSP/private-cloud scale claims into CxEngage; require load/topology proof.
• Current action capability exists, but consequential authority requires transaction failure/recovery proof.
• A staged migration can become durable dual-platform debt without explicit retirement milestones.

Rule it out if

Each platform's own statements from the research, side by side.

Alvaria

• Eliminate if a single unified modern CCaaS/WEM/AI control plane is a non-negotiable requirement and the proposed architecture cannot meet it.
• Eliminate if required residency/support-access constraints cannot be contractually met.
• Eliminate if hard topology/throughput requirements cannot be proven in buyer-controlled load testing and contract.
• Eliminate if client isolation, shared-agent model and usage attribution are mandatory and fail two-client proof.

Avaya

• If the buyer requires all routing, wait treatment, reporting and operations to move to one cloud control plane immediately, Infinity Hybrid may be the wrong transition architecture.
• If minimum commitments, peak billing, early termination exposure or third-party pass-through economics cannot meet the buyer's demand pattern, another commercial architecture is more rational.

Enghouse Interactive

• Eliminate CxEngage for the workload if the required in-region tenant/data architecture cannot be contractually demonstrated.
• Eliminate/reselect architecture if CxEngage cannot meet hard client isolation and the buyer will not use CCSP/White Label or another fit-for-purpose product.

If the job is different

• Full enterprise suites: Run the whole contact center, voice and digital, on one platform with deep administration and operations.
• Build on cloud services: Build and own the contact center on cloud building blocks, APIs and integration platforms, with your own team owning more of the design.
• Phone system plus contact center: Add a contact center to the cloud phone system you already run.
• Regional and data sovereignty: Meet a country's or region's hosting, data and sector rules first.
• Inside Microsoft Teams: Run the contact center inside Microsoft Teams, with Teams as the agent desktop and the phone system.
• Standalone for mid-size centers: Run a full voice and digital contact center for a mid-size operation, without tying it to a phone system.

Every researched platform, by job: contact center platforms. How the research is done: how we research vendors.