Colocation vs Cloud: Cost, Control and When to Choose Each
A practical comparison of colocation and public cloud for enterprise IT workloads, with a focus on three-year total cost, control trade-offs and the conditions under which each model is the better choice.
The cost comparison
The most common reason organisations evaluate colocation as an alternative to cloud is cost. For predictable, stable workloads, the three-year total cost of colocation is typically 30 to 60 percent lower than equivalent public cloud spend. This gap is driven by the difference in unit economics: cloud providers price compute at a premium to cover their own infrastructure costs plus margin, while colocation charges you primarily for power and space.
The comparison is not always straightforward, because cloud and colocation do not include the same things. Cloud pricing typically includes managed services, automatic redundancy, geographic distribution, and the ability to scale down to zero. Colocation pricing includes power, space, cooling and basic connectivity, but requires you to own and manage the hardware.
A fair three-year comparison should include: colocation power and space costs, hardware capital expenditure (amortised over the comparison period), connectivity, remote hands, and any managed services. Against that, the cloud equivalent should include all compute, storage and networking costs, plus support and any data transfer charges. Use the free calculator to model this for your specific inputs.
The control trade-off
Beyond cost, the colocation vs cloud decision involves a control trade-off. In colocation, you control the hardware entirely: you choose the specification, you manage the software stack, you control the configuration. In cloud, the infrastructure layer is abstracted away, which reduces management overhead but also limits what you can configure and optimise.
For some workloads, this matters significantly. High-performance computing, latency-sensitive financial applications, and certain compliance requirements benefit from direct hardware control that cloud cannot provide. For others, particularly applications built around cloud-native services, the abstraction is a feature rather than a limitation.
When colocation is the right choice
Colocation is typically the right choice when: your workloads are stable and predictable (not requiring rapid scale up or down), you have IT staff with hardware management capability, your performance or latency requirements are specific enough that cloud shared infrastructure does not meet them, you have data residency or compliance requirements that are easier to meet with owned hardware in a known physical location, or you are running sustained workloads above 10 kW where the three-year cost comparison favours colocation.
When cloud is the right choice
Cloud is typically the right choice when: your workloads are variable or unpredictable, you need to start fast without capital expenditure, you are building applications that use cloud-native services as a core dependency, your team does not have hardware management capability, or your workloads have short lifespans that do not justify the three to five year view that makes colocation cost-effective.
The hybrid model
Most enterprise organisations do not make a binary choice between colocation and cloud. A hybrid model colocates stable, performance-sensitive or compliance-sensitive workloads while using cloud for variable, burst or development use cases. The two environments are connected via cloud direct connect services or internet exchange peering, allowing data to move between them at low latency and without crossing the public internet.
Frequently asked questions
Is colocation cheaper than cloud?
For stable, sustained workloads typically above 10 kW, colocation is usually cheaper than equivalent public cloud on a three-year total cost of ownership basis. The crossover point depends on your specific workload, hardware capex, cloud pricing and colocation region. Use the free Colocation vs Cloud Calculator to model your specific numbers.
What is cloud repatriation?
Cloud repatriation is the process of moving workloads that were previously running in public cloud back to owned or colocated infrastructure. It typically happens when cloud costs for predictable, stable workloads grow to a point where the capital cost of owned hardware and colocation space is lower over a three-year period.
Can I use both colocation and cloud together?
Yes. A hybrid infrastructure model combines colocation for stable, performance-sensitive or compliance-sensitive workloads with cloud for variable, burst or development workloads. Most enterprise organisations operate some form of hybrid model. Connectivity between colocation facilities and cloud providers is available via cloud direct connect services (AWS Direct Connect, Azure ExpressRoute, etc.) or via internet exchanges.
What workloads are not suitable for colocation?
Workloads with highly variable compute requirements that need to scale up and down rapidly are often better suited to cloud, where you pay for what you use. Development and test environments, seasonal applications and workloads that need rapid geographic distribution are also generally better suited to cloud.
Model the cost comparison for your workload.
The free Colocation vs Cloud Calculator lets you adjust all assumptions and see the three-year comparison, breakeven month and cost difference for your specific inputs.