What each one is
Residential internet ("best effort")
The internet any ISP sells to homes and small SMBs: cable (HFC), fiber-to-the-home (FTTH), 4G/5G or satellite. Advertised bandwidth is "up to" 500 Mbps, not a guaranteed minimum. Service is delivered under best effort: the provider tries to give you that speed, but if the cell or node is saturated at 8pm, you get whatever is left.
Dedicated internet (business, "guaranteed bandwidth")
A circuit with dedicated bandwidth point-to-point between your office and the provider's node. If you buy 50 Mbps dedicated, you have 50 real Mbps — all the time, in both directions, regardless of what other ISP customers do. It comes with written SLA, static IP or IP block, business 24/7 support and usually exclusive fiber to your office.
The key word: contention (oversubscription)
The commercial trick behind residential plans is contention — how many users share the same link to the node. Typical residential service has contention between 1:20 and 1:50: 20 to 50 homes share the aggregated node bandwidth. It works because they're almost never all online at once. When they coincide (8-10pm, sports games, events), everyone slows down.
On dedicated service contention is 1:1: nobody else shares your bandwidth. That's why a 50 Mbps dedicated can cost more than a 500 Mbps residential — those 50 are yours, guaranteed, exclusive.
Residential internet is like a public bus: cheap, gets you there normally, but packed at rush hour. Dedicated internet is your own car: more expensive, but always there when you need it, no waiting.
Side-by-side comparison
| Feature | Residential | Dedicated |
|---|---|---|
| Guaranteed bandwidth | No (best effort) | Yes, 100% of contracted |
| Contention | 1:20 to 1:50 | 1:1 |
| Down / Up | Asymmetric (e.g. 500↓ / 100↑ Mbps) | Symmetric (50↓ / 50↑ Mbps) |
| Contractual SLA | No | Typically 99.5%–99.9% |
| MTTR (mean time to repair) | "Within 24-72h" | 4-8h with penalty |
| Static public IP | No (CGNAT) | Yes (1 or block /29, /28) |
| Support | Generic call center | 24/7 business NOC |
| Latency and jitter | Variable | Stable and low |
| Typical last mile | Shared HFC / PON FTTH | Dedicated fiber / dark fiber |
| Backbone | Mixed / saturable | Carrier-grade |
| Typical price (Colombia) | $60K – $200K COP/month | $500K – $3M+ COP/month |
| Installation | 1-3 days, no construction | 1-4 weeks, possible civil works |
When residential is enough
- Home and individual remote work. For video calls, browsing, streaming and occasional file uploads, a 200-500 Mbps residential plan is more than enough.
- SMBs with 5-15 employees and no internet-critical systems. If the ERP is all local and internet is just for email, browsing and WhatsApp, business residential is enough.
- Daytime businesses outside the residential peak. A restaurant or office working 8am-6pm doesn't compete with the evening peak; residential serves them well.
- Retail with card reader and low data use. Small stores where internet is for POS and basic queries.
When you actually need dedicated
1. Public services hosted at your office
Web server, on-premise email, VoIP, NVR with external camera access, VPN for remote employees. These demand a static IP and upload equal to download — a residential plan with 30 Mbps upload chokes anything that receives connections from the internet.
2. Critical operations that can't go down
E-commerce, call center, cloud POS, clinic with cloud medical records. Here the written SLA is worth what it costs. When residential drops, they tell you "we'll fix it when we can"; when dedicated drops, you have a NOC on your case in minutes and compensation if they miss the repair window.
3. Professional video conferencing and live streaming
Virtual classrooms with multiple instructors, live broadcasts, telemedicine. Jitter and latency stability are what prevents "video freezing" — something residential doesn't guarantee.
4. Companies with many simultaneous users
30+ employees uploading and downloading files at once (architecture firm with Revit on cloud, agency with 4K video). Residential collapses because upload is too low; symmetric dedicated flows.
5. Multi-site connection via site-to-site VPN
If you have offices linked by VPN (like the HOMAG case), the static IP on dedicated simplifies everything. With residential CGNAT, keeping a stable VPN requires DDNS workarounds and intermediary services.
6. Regulatory compliance
Some sectors (financial, healthcare, security) require static IP, traffic logging and documented SLA support for audits. Residential doesn't qualify.
The "business residential" trick
Many ISPs sell a plan called "business" or "enterprise" that's actually the same residential with electronic invoicing and VAT broken out. Watch out:
- If the speed is still heavily asymmetric (500↓ / 100↑ for example), it's not dedicated.
- If the words "dedicated", "guaranteed" or "1:1" don't appear in the contract, it's not dedicated.
- If there's no included static IP or it costs extra, probably not dedicated.
- If there's no written SLA with monetary compensation, not dedicated.
A "business" residential plan can be a reasonable middle option (invoicing, better support, sometimes semi-static IP), but don't confuse it with a real dedicated circuit.
Recommended architecture for SMBs
The configuration I most recommend to growing SMBs:
- Primary circuit: 30-100 Mbps symmetric dedicated internet with static IP for servers, VoIP, VPN and critical loads.
- Secondary circuit (failover): high-speed residential (500 Mbps fiber or business 5G) that takes over automatically if the primary drops.
- Router with auto load-balancing / failover: Mikrotik, pfSense or Fortinet detecting primary down and switching in seconds without intervention.
- Network segmentation: separate VLAN for guest/public WiFi, another for employees, another for servers. The teenager at the cafe shouldn't share broadcast with the ERP.
This configuration costs more than a single circuit but delivers real near-100% availability at reasonable cost.
If your business loses measurable money when internet drops for an hour, you need dedicated. If the answer is "annoying but we keep working", business residential is enough. If you actually lose clients or sales with every outage, it's no longer optional.
Right-sizing bandwidth
More bandwidth isn't always the answer. What's missing is sizing:
- Real upload needed: do you host public services? cloud backups? broadcasts? Each consumes sustained upload.
- Simultaneous peak: how many users and what does each one do at peak hour?
- Latency-sensitive apps: VoIP, RDP, professional gaming — need QoS and <50ms latency to destination.
- Tolerant apps: backup, update downloads — can use secondary circuit or off-peak scheduling.
Providers in Colombia
For business dedicated internet in Colombia the main carriers are Claro Empresas, Movistar Empresas, ETB, Tigo Business, Internexa, Level 3 / Lumen, Telefónica Tech and regional operators like EPM and UNE. Coverage varies a lot by city — in Cartagena the practical options for real dedicated are Claro, Movistar, ETB and some local business WISPs.
Price depends heavily on the last mile available at your address. Before accepting the first quote, get at least three and compare same symmetric capacity, SLA and repair time commitment.
Choosing or switching providers?
If you have an internet quote, suspect they're selling you "business" residential dressed as dedicated, or want to size the right bandwidth for your operation, tell me what they offered and I'll review the contract and proposal at no commitment.