Colocation Overview
Colocation provides physical rack space, power, cooling, and network connectivity in a third-party data center. The organization owns and manages its own servers, storage, and networking equipment. Costs are predictable (fixed monthly for space, power, and cross-connects) and the organization retains full control over hardware selection, configuration, and data handling.
Public Cloud Overview
Public cloud (AWS, Azure, Google Cloud) provides on-demand compute, storage, and networking through shared infrastructure. Resources are provisioned programmatically and billed by consumption. The cloud provider manages all physical infrastructure, hypervisor layers, and platform services. The organization manages only its applications and data.
Cost Comparison
Cloud wins on initial deployment speed and variable workloads. Colocation wins on steady-state, predictable workloads at scale — a consistently utilized server in colo costs 40–60% less over 3 years than equivalent cloud compute. The crossover point varies, but organizations spending $20K+/month on cloud compute often find colo economically compelling for their baseline workloads.
When to Choose Each
Choose colocation when you have predictable workloads, need hardware-level control, require specific compliance certifications, or want to avoid cloud vendor lock-in. Choose public cloud for variable workloads, rapid prototyping, global distribution, or when managed services (databases, AI/ML, serverless) accelerate development. Most enterprises use both in a hybrid architecture.
Common Pitfalls
Assuming cloud is always cheaper ignores the compounding effect of on-demand pricing at scale — run cost modeling before committing. Assuming colo is always cheaper ignores the hidden costs of hardware refresh cycles, spare parts inventory, and IT staff time for physical maintenance. The optimal strategy for most enterprises is hybrid: colo for baseline, cloud for burst.