For years, serious DDoS defence meant buying hardware: racks of dedicated scrubbing appliances from vendors like Arbor, Radware or NSFOCUS, sitting in your own datacenter. That model still exists, but for the vast majority of organisations it has been overtaken by cloud-based protection delivered through a reverse proxy. The choice between them comes down to a single trade-off — control versus scale — and understanding it tells you which you actually need.
The Case for On-Premise Scrubbing
- Full data sovereignty: no traffic ever leaves your network to a third party.
- Deterministic performance: no dependency on someone else's network or capacity.
- No recurring subscription after the (substantial) up-front hardware spend.
- Sometimes mandatory in regulated environments with strict data-localisation rules.
Why On-Premise Struggles Against Modern Attacks
The fatal problem with defending yourself in your own datacenter is arithmetic. Your upstream link is a fixed size; a large attack saturates it before your scrubbing hardware ever sees a packet. A 1 Tbps flood against a 10 Gbps link is over before on-prem gear can help — the traffic has already filled the pipe you are paying for.
- The uplink is the bottleneck: volumetric floods drown the link ahead of any local scrubbing.
- Hardware must be over-provisioned for peak attacks you may never see, which is expensive idle capacity.
- Maintenance, firmware and staff training are ongoing costs the appliance brochure does not mention.
- Attack traffic still has to arrive at your datacenter just to be dropped there.
Why the Cloud / Reverse-Proxy Model Won
- Attacks are handled upstream, before traffic reaches your infrastructure at all.
- Capacity scales without you provisioning and maintaining hardware for a worst case.
- Activation is a DNS change in minutes, not a BGP diversion that takes half an hour.
- You pay for a service, not a depreciating rack of appliances.
The verdict for most teams
If you have a hard regulatory rule against routing traffic through a third party, evaluate on-prem seriously. Otherwise, cloud-based reverse-proxy protection is faster to deploy, cheaper to run and scales in ways owned hardware cannot.
Where Akarguard Sits in This Picture
Akarguard is the cloud / reverse-proxy model, with two honest clarifications. It operates at Layer 7: it filters application-layer attacks, applies your WAF and rate limits, and hides your origin so it cannot be hit directly. Raw volumetric floods are absorbed by the upstream network in front of the edge, the same division of labour every reverse-proxy provider relies on. And on the data-sovereignty concern that drives some teams toward on-prem: Akarguard keeps data in the EU and offers a DPA, which for many European organisations resolves the localisation worry without owning a single appliance.