How do cost factors compare between IaaS and colocation?

IaaS providers typically offer on-demand (pay-as-you-go) pricing. They also make it possible for clients to scale their resources (up or down) just by updating settings in a web interface. This means organizations can match their provisioning to their needs with a high level of precision. This keeps costs to a minimum for light usage.

As usage increases, organizations often have the option to switch to subscription-based pricing or committed contracts. Even so, the usage-based pricing model of cloud services can make costs a lot higher than the costs of using physical hardware.

Colocation typically requires a greater up-front investment (as equipment needs to be purchased and deployed). For heavy, stable workloads, however, its ongoing costs tend to be much lower than the costs of using IaaS in an equivalent way. Over time, this difference will counterbalance the set-up costs. Moreover, colocation pricing tends to be predictable and therefore easy to budget for.

Overall, IaaS is the better choice for businesses prioritising low set-up costs and high flexibility. Colocation is the better choice for businesses seeking an economical solution for heavy, predictable workloads.