If you have ever looked at two internet quotes that promise the same megabits and wondered why one costs three times the other, the answer is almost always the same. One is Dedicated Internet Access. The other is best-effort broadband. They are not the same product, and treating them as interchangeable is one of the most expensive mistakes a multi-site business can make.
What Dedicated Internet Access actually is
Dedicated Internet Access (DIA) is a private circuit between your site and the carrier's backbone. Upload and download speeds are symmetrical, throughput is contractually guaranteed, and the carrier owes you service credits when uptime, latency, or repair times miss the contract. Nothing about the circuit is shared with another customer.
Why broadband is not the same
Cable, DSL, fixed wireless, and small-business fiber are best-effort. The advertised speeds are a ceiling, not a floor. Upload is a fraction of download. There is no SLA, no repair window, and no credits when the link goes down for a day.
That is fine for some workloads. It is the wrong choice for anything that bills, processes payments, runs hosted voice for the whole company, or supports compliance-regulated traffic.
How to decide
The decision is usually about blast radius. If the circuit going down means revenue stops, choose DIA and add a second diverse path for failover. If the site can survive a few hours of outage and rerouting traffic over LTE is acceptable, broadband with an SD-WAN overlay is often a better cost-to-value match.
- Headquarters, data centers, and large branch sites: DIA as primary, broadband or 5G as secondary.
- Retail and small branch sites: business broadband as primary, with SD-WAN failover to LTE.
- Voice, video, and contact-center traffic: always sit it on top of DIA, even if other apps tolerate broadband.
- Regulated workloads (PCI, HIPAA, finance): DIA, with documented SLAs that map to your compliance evidence.
What good DIA pricing looks like
Pricing varies by address, building, and the carriers that already have fiber lit nearby. The same speed at the same building can swing two or three times in price across carriers. Anyone who quotes you a single carrier is leaving money on the table. Get three to five competing quotes, and benchmark term length, install cost, and SLA at the same time.