Decision Framework
Hybrid cloud encompasses several AWS tools, each solving a different problem. Choosing the wrong one is a common interview and real-world mistake.
| Scenario | Right Tool | Why |
|---|---|---|
| Factory floor needs <5ms latency, permanent production workload | AWS Outposts | Physical compute on-site, full AWS API compatibility |
| Remote oil rig, no reliable internet, needs local compute | AWS Snowball Edge | Designed for disconnected/intermittent connectivity |
| Manage patching and commands across on-prem + EC2 fleet | SSM Hybrid Activations | Unified management plane, no inbound ports |
| Extend VPC networking to on-premises data center | AWS Direct Connect | Dedicated private network link, not compute |
| Run containers on-premises with EKS management | EKS on Outposts | Outpost provides the hardware; EKS provides the control plane |
| Replicate on-prem VMware VMs to AWS | VMware Cloud on AWS | Purpose-built for VMware workload migration |
The key differentiator between Outposts and Snowball Edge deserves emphasis: connectivity dependency. Outposts requires a persistent, reliable Service Link to function as a full AWS extension. Snowball Edge is built to operate completely independently for weeks or months, then sync when connectivity is restored.
Cost Model Awareness
Outposts pricing differs fundamentally from standard AWS pricing. You pay a capacity reservation fee — essentially renting the physical hardware — regardless of whether you use it. This is similar to reserving a parking space: you pay for the space whether your car is there or not. This makes Outposts economically justified only when you have consistently high utilization. A workload that runs 20% of the time is almost always cheaper in the cloud region.
SSM Hybrid Activations, by contrast, are priced per managed instance per month (with a free tier for the first 1,000 instances). The cost is typically negligible compared to the operational savings from unified management.