3CX Hosted vs Self-Hosted
The right deployment model depends on your team size, IT resources, compliance requirements, and budget. Houston TechSys has deployed both — here is an honest comparison.
3CX Hosted
3CX Hosted means your 3CX server runs on infrastructure managed by 3CX or a certified cloud partner. You purchase a 3CX license that includes hosting, and 3CX manages the underlying server — OS updates, backups, failover, and security patching are handled for you.
The hosted option is the right starting point for most Houston small businesses. You get enterprise-grade phone system capability without employing a server administrator. Houston TechSys configures the 3CX application layer while 3CX manages the infrastructure.
Hosted 3CX typically costs more per seat than self-hosted when you account for just the licensing, but it eliminates server management labor — which often makes it cheaper on a total cost basis for businesses without dedicated IT staff.
Self-Hosted
Self-hosted 3CX runs on a server you control — either a physical server in your office, a VM in your own data center, or a virtual machine on a cloud platform like Azure, AWS, or Google Cloud. You own the infrastructure and bear responsibility for its management.
Self-hosted is the preferred choice for businesses with strict data residency requirements (healthcare, legal, government contracting), organizations that want full control over upgrade scheduling, and companies with existing IT infrastructure and in-house or managed IT teams.
Houston TechSys deploys self-hosted 3CX on Azure (our preferred cloud platform for Houston-area businesses) with automated backups, Azure-native monitoring, and a managed support plan to handle all updates and changes.
Side-by-Side Comparison
| Feature | Hosted | Self-Hosted |
|---|---|---|
| Infrastructure ownership | Managed by 3CX or cloud provider | Your server or your cloud account (Azure, AWS, GCP) |
| Monthly cost | Included in 3CX license (add-on tier) | Server/VPS cost ~$40–$150/mo depending on size |
| Update management | 3CX manages updates automatically | You (or your MSP) apply updates on your schedule |
| Data residency | 3CX data centers (EU or US) | Your chosen cloud region or your own hardware |
| Customization | Limited to 3CX-permitted configurations | Full OS and application stack access |
| Uptime responsibility | 3CX SLA applies | You own the uptime — managed support recommended |
| Scaling | Scaled by 3CX automatically | You resize the VM or add hardware as needed |
| CRM integration | Full integration support | Full integration support |
| Hardware phones | Fully supported | Fully supported |
| Remote worker support | Built-in via 3CX tunnel | Built-in via 3CX tunnel or STUN/TURN |
Our Recommendations by Business Type
Small Business (1–25 seats)
The simplicity and reduced management overhead outweigh the slight cost premium. Unless you have specific compliance needs, hosted 3CX is the right starting point.
Mid-Size Office (26–75 seats)
If you have an MSP or in-house IT, self-hosted on Azure gives you more control at lower total cost. Without IT support, hosted removes the management burden.
Healthcare or Legal
HIPAA and client confidentiality considerations often require data residency control. Self-hosted on a HIPAA-eligible Azure region with BAA is the right answer.
Multi-Location Business
A single self-hosted instance on Azure handles multiple locations at lower per-seat cost than running separate hosted instances. Centralized management is simpler.
Call Center (75+ seats)
At high seat counts, the cost difference between hosted and self-hosted becomes significant. Self-hosted on dedicated infrastructure also provides better call quality predictability.
Remote-First Team
Both deployment models support the 3CX remote worker tunnel equally. The deciding factor is your other considerations (compliance, IT resources, seat count).
Frequently Asked Questions
Can we switch from hosted to self-hosted later?
Yes. 3CX supports migration between deployment models. We handle the migration with minimal disruption — typically a maintenance window of 2–4 hours.
What cloud does Houston TechSys use for self-hosted deployments?
Our primary platform is Microsoft Azure. We use Azure VMs with geo-redundant backups, Azure Monitor for alerting, and Azure NSG for firewall management. We also deploy on AWS and Google Cloud on request.
Is self-hosted more expensive than hosted?
In most cases, self-hosted costs less in licensing but adds infrastructure and management costs. For a 15-seat business without IT staff, hosted is typically cheaper total. For a 50-seat business with an MSP, self-hosted is usually less expensive.
Does hosting location affect call quality?
Yes. For Houston-area businesses, we deploy self-hosted instances in Azure South Central US (San Antonio) or Azure East US (Virginia) — both with low latency to Houston. 3CX-hosted instances use similar US-based data centers.
Not Sure Which to Choose?
Tell us about your business and we will give you an honest recommendation at no cost.