The short version
Pick the internet service based on what the site must keep online: phones, EFTPOS, cameras, SaaS apps, contact centre queues, uploads or remote access.
| Option | Best fit | Watch-out |
|---|---|---|
| Business NBN | Value baseline for many sites | May not provide enough SLA, upload or diversity |
| Direct fibre / Enterprise Ethernet | Critical sites, higher bandwidth, stronger SLA needs | Longer provisioning and higher cost |
| 5G | Backup, fast deployment, temporary sites | Coverage and signal quality must be checked |
Design for failure
The right answer is often not one connection. A primary business NBN or fibre service plus 5G failover can keep critical traffic online when the fixed link drops.
Size the backup link properly
The backup does not need to carry everything. It needs to carry the services that matter during an outage: voice, EFTPOS, critical SaaS, remote support and security access.