VPN vs Direct Connect
Hybrid cloud.
Overview
VPN and Direct Connect cover different ends of the hybrid-cloud connectivity spectrum. VPN is cheap and fast to stand up; Direct Connect is dedicated and predictable. Most teams use both at different points in their lifecycle.
- Hybrid cloud connectivity. On-prem to AWS link options. Both options carry traffic; they differ on latency, bandwidth, and price.
- VPN: cheap and quick. IPsec over the public internet. Stands up in an afternoon and costs hundreds per month.
- Direct Connect: dedicated. Per-port physical connection. Takes weeks to provision and costs thousands per month.
- Latency profile. VPN inherits public-internet variability; Direct Connect carries predictable single-digit-ms latency that latency-sensitive workloads need.
The approach
The decision is workload-driven. VPN is the default for most teams; Direct Connect is for enterprise loads that justify the cost and lead time.
- VPN default. Most workloads tolerate VPN’s latency profile. Start here unless evidence demands more.
- Direct Connect for enterprise. Predictable bandwidth and lower latency justify the cost when traffic volumes or compliance posture require dedicated capacity.
- Hybrid path: Direct Connect plus VPN. DC as primary, VPN as failover. The team gets predictable performance and a survivable backup link.
- Monitor link health and document the choice. Per-link latency and packet-loss dashboards plus a written rationale. Future operators inherit context, not just configuration.
Why this compounds
The first hybrid-link decision teaches the team how the trade-off actually plays out at their scale. Subsequent decisions reuse the framework.
- Operational fit. Matching link to workload prevents both over-spending on Direct Connect and under-serving latency-sensitive paths with VPN.
- Cost efficiency. The right tier per workload keeps the connectivity bill matched to actual need.
- Resilience. A DC-primary, VPN-failover topology survives a single-link failure that pure DC or pure VPN does not.
- Year-one investment, year-two habit. The first decision takes weeks; the second is reusable thinking with new numbers.