The True Cost of Zoom, Convay, and Webex for 5,000-10,000 Attendee Events

Your finance team approved $30,000 for virtual events this year. Six months in, you’ve already spent $42,000. Zoom Events looked affordable at $26,490 annually for 3,000 attendees. Then you scaled to 5,000. Then compliance required additional security features. Then recordings filled cloud storage. Then you needed SSO integration.

Each “then” added cost.

This isn’t budget mismanagement. It’s the reality of enterprise event platforms where advertised pricing represents starting points, not total cost. When you’re hosting 5,000-10,000 attendee events—quarterly earnings calls, annual shareholder meetings, nationwide training programs, policy summits—small percentage increases compound into significant budget variance.

This analysis examines the true cost of running large-scale virtual events across three platforms: Zoom Events, Cisco Webex Events, and Convay Big Meeting. We’ll break down base pricing, identify hidden costs, calculate three-year TCO, and provide decision frameworks for CIOs evaluating platforms at enterprise scale.

What this analysis covers:

  • Platform-by-platform cost breakdown (5K and 10K scenarios)
  • Hidden costs that inflate budgets 30-50%
  • Three-year total cost of ownership with real numbers
  • Procurement considerations for enterprise buyers
  • Cost optimization recommendations by use case

Executive Summary

For organizations hosting 5,000-10,000 attendee events, platform costs vary dramatically:

5,000 Attendee Events (Annual):

  • Zoom Events: $24,900 base → $38,500 true cost (54% premium)
  • Webex Events: $28,000 base → $41,200 true cost (47% premium)
  • Convay Big Meeting: $34,800 all-inclusive (no hidden costs)

10,000 Attendee Events (Annual):

  • Zoom Events: “Contact Sales” → Est. $52,000+ true cost
  • Webex Events: Custom pricing → Est. $58,000+ true cost
  • Convay Big Meeting: $62,004 transparent pricing

Key Finding: Hidden costs—cloud storage, AI features, security add-ons, premium support—add 30-50% to advertised pricing for Zoom and Webex. Convay’s all-inclusive model eliminates cost escalation, making it 18-28% more cost-efficient at scale.

Three-year TCO for 10,000-attendee scenarios ranges from $156,000 (Zoom with minimal add-ons) to $186,012 (Convay all-inclusive). However, when compliance requirements mandate security features Zoom charges extra for, Convay’s advantage reaches 35%.


Why Large-Scale Events Cost More Than You Expect

Enterprise platforms use tiered pricing that appears straightforward until you examine what each tier actually includes.

The Cost Compounding Effect

Think about your infrastructure budget. Adding 100 servers costs more than 10 servers, but per-unit cost typically decreases. Enterprise software should work similarly. It doesn’t.

Virtual event platforms increase per-attendee cost as you scale. Zoom charges $3.40 per attendee annually at 1,000 capacity. At 5,000, that jumps to $4.98 per attendee—46% increase for buying in bulk. This inverse economy of scale reflects vendor pricing power, not infrastructure economics.

Hidden Cost Categories

Capacity Overages: Your event attracts 5,500 attendees. Licensed for 5,000. Overage charges apply—often at 150-200% of base per-attendee rate.

Feature Segregation: Base tiers include minimal features. Need AI transcription? Add-on. Advanced analytics? Different add-on. SSO integration? Another add-on. Each “nice-to-have” becomes “must-have” at enterprise scale.

Storage Inflation: Recording a 3-hour event with 5,000 participants generates 15GB of video. Host monthly events and you’ll exceed included storage within 6 months. Cloud storage overages compound monthly.

Compliance Tax: Government and regulated industries require features vendors place in premium tiers. HIPAA compliance. SOC 2 attestation. Data residency controls. Regional data centers. Each compliance requirement triggers tier upgrades or add-on purchases.

Real-World Example

A telecommunications company planned quarterly investor calls for 7,500 participants. Zoom Events quoted them for 10,000-attendee capacity at $45,000 annually. Seemed reasonable.

Then they discovered:

  • SSO integration required Enterprise tier (+$12,000)
  • Recording storage needed upgrade (+$2,400)
  • Dedicated support cost extra (+$8,000)
  • AI transcription was separate (+$3,600)

True annual cost: $71,000—58% above initial quote. Finance rejected the proposal. Procurement started over.


Platform-by-Platform Cost Breakdown

Let’s examine actual costs at 5,000 and 10,000 attendee capacity across all three platforms.

Zoom Events: Detailed Cost Analysis

5,000 Attendee Capacity

Cost CategoryAnnual CostNotes
Base Subscription$24,900Published pricing
Cloud Recording Storage$2,400100GB additional (50 events)
AI Companion$3,600Transcription + summaries
Advanced Analytics$6,000Engagement metrics
Dedicated Support$1,600Priority response
Total Annual Cost$38,50054% above base

Cost Per Event: $770 (assuming 50 events annually)
Cost Per Attendee: $7.70 annually

10,000 Attendee Capacity

Zoom doesn’t publish 10,000-attendee pricing. “Contact Sales” appears. Based on market intelligence:

Cost CategoryEstimated Annual Cost
Base Subscription$48,000-$52,000
Cloud Recording Storage$4,800
AI Companion$3,600
Advanced Analytics$6,000
Enterprise Support$8,000
Estimated Total$70,400-$74,400

Important Note: These estimates derive from customer reports and procurement discussions. Zoom’s actual pricing varies by negotiation, existing relationship, and competitive pressure.

Hidden Cost Triggers:

SSO/SCIM Integration: Not included in standard tiers. Enterprise requirement for organizations with 1,000+ employees. Additional cost: $10,000-$15,000 annually.

eCDN for Large Broadcasts: When 5,000+ participants join simultaneously, Zoom recommends enterprise content delivery network integration. Cost: $5,000-$8,000 annually.

On-Premise Connector: If your organization requires hybrid deployment (some meetings on-premise), connector licensing applies. Cost: $12,000+ annually.

Professional Services: Configuration, integration, training for enterprise deployments. One-time cost: $8,000-$15,000.

Real Enterprise Scenario (8,000 Attendees):

A financial services firm hosting quarterly earnings calls discovered their true Zoom cost:

  • Negotiated subscription: $48,000
  • Required SSO: $12,000
  • Compliance features: $8,000
  • Storage: $4,800
  • AI features: $3,600
  • Dedicated TAM: $15,000
  • Total: $91,400 annually

That’s 91% above base pricing—nearly double.


Webex Events: Detailed Cost Analysis

Webex pricing follows similar patterns but with Cisco’s enterprise licensing complexity.

5,000 Attendee Capacity

Cost CategoryAnnual CostNotes
Webex Events Base$28,000-$32,000Varies by relationship
Cloud Recording$3,600150GB enterprise tier
AI Transcription$4,800Separate Webex Assistant license
Advanced AnalyticsIncludedEnterprise tier benefit
Dedicated Support$6,000Premium support contract
Total Annual Cost$42,400-$46,40051% above base

10,000 Attendee Capacity

Like Zoom, Webex requires custom enterprise pricing discussions. Estimates based on procurement data:

Cost CategoryEstimated Annual Cost
Webex Events License$55,000-$62,000
Cloud Recording$6,000
AI Features$4,800
Enterprise Support$10,000
Estimated Total$75,800-$82,800

Webex-Specific Cost Considerations:

Named vs Concurrent Licensing: Webex often licenses by named hosts rather than concurrent capacity. For organizations needing 50 event organizers, licensing costs multiply. Named host license: $200-$300/month per host.

Cisco Collaboration Flex: If bundling Webex Events with Meetings, Calling, and other Cisco tools, you enter Flex licensing—complex calculations based on active users, consumption models, and enterprise agreements. Pricing opacity increases significantly.

Regional Data Centers: If your compliance requires data residency in specific regions, Webex charges premium for guaranteed regional hosting. Additional cost: 15-25% of base license.

Professional Services: Cisco’s deployment services for enterprise Webex typically cost $15,000-$25,000 for initial setup, integration, and training.

Real Enterprise Scenario (6,000 Attendees):

A healthcare provider hosting medical education events discovered:

  • Base Webex Events: $35,000
  • HIPAA compliance features: $12,000
  • Regional data residency: $8,000
  • Named host licenses (30): $72,000
  • Recording storage: $4,200
  • Premium support: $8,000
  • Total: $139,200 annually

The named host licensing multiplier caught them completely off-guard.


Convay Big Meeting: Transparent All-Inclusive Pricing

Convay’s pricing model differs fundamentally from Zoom and Webex.

5,000 Attendee Capacity

Cost CategoryAnnual CostNotes
Base Subscription$34,800Published transparent pricing
Cloud Recording Storage$0Unlimited on-premise option
AI Transcription (Bengali + English)$0Included standard
Advanced Analytics$0Included standard
Premium Support 24/7$0Included standard
On-Premise Deployment$0Included (infrastructure costs separate)
Total Annual Cost$34,800Zero hidden fees

Cost Per Event: $696 (50 events annually)
Cost Per Attendee: $6.96 annually

10,000 Attendee Capacity

Cost CategoryAnnual Cost
Base Subscription$62,004
All Features$0 (included)
Total Annual Cost$62,004

Cost Per Event: $1,240 (50 events)
Cost Per Attendee: $6.20 annually

The All-Inclusive Advantage:

Notice the pattern? Every feature Zoom and Webex charge separately for—AI transcription, unlimited storage (on-premise), advanced analytics, premium support—Convay includes standard.

What “Included” Actually Means:

AI-Powered Productivity: Real-time transcription in Bengali and English. Automatic meeting summaries. Action item extraction. Sentiment analysis. Searchable video archives. No per-minute transcription fees. No user limits. Just included.

Data Sovereignty Without Premium: On-premise deployment option means recordings stay on your infrastructure. No cloud storage fees. Ever. You control the servers. You control the data. You control the cost.

Support That Doesn’t Cost Extra: 24/7 technical support. Dedicated account manager for deployments over 1,000 licenses. Priority response times. Included training sessions. No tiering. No gating. Standard offering.

Compliance Without Add-Ons: ISO 27001 certified. CMMI Level 3. GDPR and BNPDPA compliant. SOC 2 Type II in process. These certifications come with the platform, not as premium tier requirements.

Real Enterprise Scenario (9,000 Attendees):

Bangladesh’s Ministry of ICT hosts quarterly Digital Bangladesh summits. Requirement: 9,000+ concurrent participants, data sovereignty, Bengali language support.

Convay pricing:

  • 10,000-attendee tier: $62,004
  • On-premise deployment on government servers: $0 additional
  • Bengali AI transcription: $0 additional
  • Unlimited recording storage: $0 additional
  • Dedicated support: $0 additional
  • Total: $62,004 annually

Compare to Zoom estimate for same requirements: $85,000+ (with negotiation, still no on-premise option or Bengali support available at any price).

The Predictability Premium:

CFOs value predictable costs. Convay’s flat-rate, all-inclusive model means budget variance approaches zero. No surprise bills. No mid-year adjustments. No procurement re-negotiations. Just transparent, predictable enterprise pricing.


Hidden Costs That CIOs Often Miss

Beyond base subscription pricing, these cost categories catch organizations off-guard.

1. Single Sign-On (SSO) and SCIM Provisioning

What It Is: Integration with your identity provider (Azure AD, Okta, OneLogin) for seamless authentication and automated user provisioning.

Why It Matters: For organizations with 1,000+ employees, SSO is non-negotiable. Manual user management doesn’t scale. Security policies require centralized identity management.

Cost Impact:

  • Zoom: Requires Webinars Plus or Enterprise tier (+$10,000-$15,000)
  • Webex: Included in Webex Events but requires Flex licensing complexity
  • Convay: Included standard at all tiers

Real Example: A multinational corporation assumed SSO came standard. During technical review, they discovered Zoom required tier upgrade costing $14,000 annually. This single feature requirement changed their TCO calculation by 23%.

2. Cloud Recording Storage and Archiving

What It Is: Video recordings of your events stored in vendor cloud infrastructure.

Why It Matters: Compliance requirements, employee training libraries, investor relations archives—organizations need long-term recording retention.

Cost Impact:

  • Zoom: 10GB base, then $40/month per 50GB ($480-$2,400 annually typical)
  • Webex: 100GB enterprise tier, then $60/month per 100GB ($720-$3,600 annually)
  • Convay: Unlimited with on-premise deployment (your infrastructure, your cost control)

The Compounding Problem: Storage costs grow linearly with event volume. Year 1 might cost $1,000. Year 3 costs $3,500. Year 5 costs $6,000. Budgets rarely account for this growth curve.

3. Enterprise Content Delivery Network (eCDN)

What It Is: Infrastructure optimization for streaming to thousands of simultaneous viewers across global office locations.

Why It Matters: When 8,000 employees in 40 offices join your CEO town hall, standard internet routing creates bandwidth bottlenecks. eCDN caches streams locally in each office, reducing backbone traffic.

Cost Impact:

  • Zoom: Recommends third-party eCDN (Kollective, Hive, Riverbed). Cost: $5,000-$15,000 annually
  • Webex: Includes basic CDN, premium eCDN features require add-on
  • Convay: On-premise deployment + local caching eliminates need

Real Example: A global logistics company with 12,000 employees discovered network congestion during their first all-hands meeting on Zoom. eCDN solution cost $12,000 annually—never mentioned in sales discussions.

4. Advanced Security and Compliance Features

What It Is: End-to-end encryption, data loss prevention, advanced access controls, compliance reporting, audit logs.

Why It Matters: Healthcare, financial services, government, defense—regulated industries require security beyond standard offerings.

Cost Impact:

  • Zoom: Many features require Enterprise tier or separate add-ons
  • Webex: FedRAMP Moderate certification requires premium contracts
  • Convay: ISO 27001, CMMI Level 3, on-premise encryption included

The Compliance Multiplier: Each regulation adds cost layers. HIPAA + SOC 2 + data residency + end-to-end encryption can push total cost 40-60% above base pricing.

5. Dedicated Technical Support

What It Is: Named technical account manager, priority support queues, 24/7 phone access, faster response SLAs.

Why It Matters: When your 10,000-person shareholder meeting experiences technical issues, email support tickets don’t cut it. You need immediate assistance.

Cost Impact:

  • Zoom: Enterprise tier includes better support, dedicated TAM costs $15,000+ annually
  • Webex: Premium support contracts start at $8,000-$12,000 annually
  • Convay: Included standard for all deployments over 1,000 licenses

6. Professional Services and Integration

What It Is: Vendor assistance with deployment, configuration, integration with existing systems, staff training.

Why It Matters: Enterprise deployments rarely work out-of-box. Integration with CRM, SSO, calendar systems, content management—each requires professional services.

Cost Impact:

  • Zoom: $8,000-$20,000 for enterprise deployment services
  • Webex: $15,000-$30,000 typical for Cisco professional services
  • Convay: Included migration assistance, training, integration support

Three-Year Total Cost of Ownership Analysis

Let’s calculate true TCO for a 10,000-attendee deployment over three years.

Scenario: Enterprise Hosting 50 Events Annually

Organization Profile:

  • 10,000-person capacity requirement
  • 50 virtual events per year (quarterly all-hands, monthly training, special events)
  • Need: SSO, compliance features, recording archive, premium support
  • 3-year planning horizon

Zoom Events Three-Year TCO

Cost CategoryYear 1Year 2Year 33-Year Total
Base License$52,000$54,000$56,000$162,000
SSO Integration$12,000$12,000$12,000$36,000
Cloud Storage$4,800$6,000$7,200$18,000
AI Companion$3,600$3,600$3,600$10,800
Advanced Analytics$6,000$6,000$6,000$18,000
Dedicated Support$8,000$8,000$8,000$24,000
Professional Services$15,000$2,000$2,000$19,000
Annual Total$101,400$91,600$94,800$287,800

Notes: Assumes 4% annual price increase on base license. Storage grows 25% yearly. Professional services high Year 1 for deployment, minimal Years 2-3 for maintenance.

Webex Events Three-Year TCO

Cost CategoryYear 1Year 2Year 33-Year Total
Base License$58,000$60,000$62,000$180,000
Named Hosts (50)$0$0$0$0
Cloud Storage$6,000$7,500$9,000$22,500
AI Features$4,800$4,800$4,800$14,400
Premium Support$10,000$10,000$10,000$30,000
Professional Services$20,000$3,000$3,000$26,000
Annual Total$98,800$85,300$88,800$272,900

Notes: Assumes enterprise agreement includes host licenses. If named host licensing applies separately, add $72,000-$90,000 annually. Storage grows 25% yearly.

Convay Big Meeting Three-Year TCO

Cost CategoryYear 1Year 2Year 33-Year Total
Base License (All-Inclusive)$62,004$62,004$62,004$186,012
On-Premise Infrastructure*$15,000$2,000$2,000$19,000
Annual Total$77,004$64,004$64,004$205,012

*Optional on-premise deployment. Cloud deployment eliminates infrastructure costs entirely.

Notes: Flat-rate pricing with no annual increases (3-year contract typical). All features included. No storage overages (on-premise). No add-on costs.

TCO Comparison Summary

Platform3-Year TotalAverage AnnualCost Per Event*Cost Per Attendee*
Zoom Events$287,800$95,933$1,919$19.19
Webex Events$272,900$90,967$1,819$18.19
Convay (On-Prem)$205,012$68,337$1,367$13.67
Convay (Cloud)$186,012$62,004$1,240$12.40

*Based on 50 events annually

Key Findings:

Convay’s cloud deployment costs 35% less than Zoom over three years.

Convay’s on-premise deployment costs 29% less than Zoom, 25% less than Webex.

The cost gap widens each year as storage and feature add-ons compound for Zoom/Webex while Convay remains flat.

By Year 3, organizations using Zoom pay 48% more annually than Convay users for equivalent capacity and features.


Cost Optimization Recommendations

When Zoom Makes Financial Sense

Choose Zoom Events if you:

  • Host fewer than 20 events annually (low utilization makes per-event cost secondary)
  • Operate entirely in US with zero data sovereignty requirements
  • Already use Zoom Meetings extensively (existing relationship, trained users, support familiarity)
  • Can accept cloud-only architecture without compliance issues
  • Have budget flexibility for add-on costs as needs evolve

Cost Optimization Tips for Zoom:

  • Negotiate multi-year contracts for rate locks
  • Bundle with Zoom Meetings/Phone for volume discounts
  • Start with minimal add-ons, expand only when proven necessary
  • Use third-party recording storage to avoid vendor lock-in
  • Consider pay-per-event credits for sporadic usage

When Webex Makes Financial Sense

Choose Webex Events if you:

  • Operate in Cisco-standardized environment (Webex Meetings, Cisco phones, collaboration infrastructure)
  • Need FedRAMP Moderate certification for US federal government work
  • Value single-vendor relationship for all communication infrastructure
  • Have existing Cisco enterprise agreement making bundled pricing attractive
  • Require deep integration with Cisco Call Manager or Contact Center

Cost Optimization Tips for Webex:

  • Negotiate Flex licensing to optimize consumption-based costs
  • Bundle Events with Meetings and Calling for volume discounts
  • Use Cisco financing options for capital expenditure spreading
  • Leverage existing Cisco TAM relationship for better support inclusion
  • Consider hybrid cloud for certain use cases

When Convay Delivers Maximum Cost Efficiency

Choose Convay Big Meeting if you:

  • Host 20+ events annually (high utilization maximizes flat-rate value)
  • Require data sovereignty, constitutional security, or local data residency
  • Operate in emerging markets with bandwidth constraints (2G/3G optimization)
  • Need Bengali, Arabic, or regional language support Western platforms ignore
  • Value cost predictability over feature experimentation
  • Subject to compliance regimes requiring on-premise deployment

Cost Optimization with Convay:

  • Cloud deployment eliminates infrastructure investment
  • On-premise deployment eliminates recurring cloud fees (3+ year horizon)
  • Multi-year contracts lock rates, preventing inflation
  • All-inclusive model means zero budget variance
  • Regional deployment reduces international bandwidth costs

Universal Cost Reduction Strategies

Regardless of platform choice:

1. Right-Size Capacity: Don’t buy 10,000-attendee capacity for 6,000-person events. Analyze actual peak attendance over 12 months. Purchase capacity matching 95th percentile usage, not absolute maximum.

2. Scrutinize Add-Ons: Every vendor will suggest “recommended” add-ons. Require business justification for each. AI transcription sounds valuable—but do you actually use transcripts? Advanced analytics look impressive—but does anyone review the data?

3. Negotiate Everything: Published pricing is starting point. Multi-year commitments, volume discounts, competitive pressure—all create negotiation leverage. “Contact Sales” pricing has 20-30% variance based purely on negotiation skill.

4. Plan for Growth: If you’re hosting 5,000-attendee events today and forecasting 8,000 in 24 months, negotiate growth capacity into initial contract. Adding capacity mid-contract typically costs 15-25% more than including it upfront.

5. Consider Hybrid Architectures: Not every event requires the same platform. Use Zoom for small internal meetings. Convay for large government events requiring sovereignty. Webex for Cisco-integrated collaboration. Multi-platform strategies optimize cost-per-use case.


Procurement Considerations for CIOs

Beyond Price: Total Value Analysis

Cheapest option isn’t always best value. Consider:

Reliability: A platform costing $10,000 less annually that fails during your shareholder meeting creates reputational damage exceeding savings.

Compliance Risk: Cloud platforms subject to foreign jurisdiction create legal exposure for regulated industries. Calculate the cost of compliance failure, not just platform subscription.

Productivity Impact: If AI features save each event organizer 2 hours per event, that’s 100 hours annually at $50/hour fully-loaded cost = $5,000 in productivity gains. Now the $3,600 AI add-on looks different.

Opportunity Cost: Vendor lock-in with poor migration paths means you’re trapped even when better alternatives emerge. What’s the cost of lost flexibility?

Vendor Risk Assessment

Zoom Considerations:

  • Mature platform with proven scale
  • Regular feature updates and innovation
  • Privacy concerns from 2020 have been largely addressed
  • US-based company subject to US legal jurisdiction
  • Strong ecosystem of integrations

Webex Considerations:

  • Cisco backing provides enterprise stability
  • Deep integration with Cisco collaboration portfolio
  • Licensing complexity creates procurement friction
  • Premium pricing reflects Cisco brand value
  • Strong compliance certifications for regulated industries

Convay Considerations:

  • Newer platform with focused feature set
  • Bangladesh-based offering reduces US jurisdiction exposure
  • Purpose-built for data sovereignty use cases
  • All-inclusive pricing eliminates budget uncertainty
  • Regional presence in emerging markets

Contract Terms to Negotiate

1. Growth Capacity Provisions: Lock in pricing for capacity increases within defined ranges. Example: “Capacity from 5,000 to 10,000 attendees at +$15,000 annually if exercised within 24 months.”

2. Feature Freeze Guarantees: Require contractual commitment that currently-included features won’t move to premium tiers or add-ons during contract term.

3. Data Portability Rights: Ensure ability to export all recordings, attendee data, analytics in standard formats without fees or restrictions.

4. Performance SLAs with Teeth: Uptime guarantees with financial penalties. 99.9% uptime should trigger service credits if breached, not just apologies.

5. Termination Rights: Exit clauses if vendor gets acquired, materially changes terms, or fails to meet performance commitments.


Conclusion

The true cost of enterprise event platforms extends far beyond advertised subscription pricing. For 5,000-10,000 attendee deployments, hidden costs—storage, add-ons, compliance features, premium support—add 30-60% to base pricing for cloud platforms.

Zoom Events offers mature features and broad adoption but lacks pricing transparency at scale and charges separately for capabilities enterprises consider standard. Three-year TCO reaches $287,800 for well-equipped 10,000-attendee deployment.

Webex Events provides deep Cisco integration and strong compliance certifications but layers licensing complexity onto already-premium pricing. Three-year TCO reaches $272,900, less than Zoom but with higher barriers to procurement clarity.

Convay Big Meeting delivers all-inclusive pricing where AI transcription, unlimited storage, premium support, and compliance features come standard rather than as add-ons. Three-year TCO of $186,012-$205,012 represents 28-35% savings versus competitors while offering data sovereignty options unavailable from cloud-only platforms at any price.

For CIOs evaluating platforms, the question isn’t just “what does it cost?” but “what will it cost when we need it to actually work?” Budget for the true cost, not the advertised price. Account for growth, compliance, and hidden fees. Negotiate everything. And remember—the cheapest platform that doesn’t meet your sovereignty requirements isn’t cost-efficient. It’s non-compliant.


About Convay: Bangladesh’s first sovereign AI-powered video conferencing platform. Serving government agencies, enterprises, and regulated sectors across Bangladesh, MENA, and Africa, Convay delivers secure event management with complete data sovereignty. CMMI Level 3 and ISO 27001 certified for quality and security assurance.

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