Cloud computing costs and benefits
A cloud strategy helps enterprises reduce costs and deliver significant benefits. The main difference between cloud computing and traditional IT is the shift from Capital Expenditures (CAPEX) to Operational Expenditures (OPEX). CAPEX includes hardware expenses for items such as data center racks, physical servers, and network devices. The pay-as-you-go model of the cloud links IT spending more closely to business operations. This model reduces large, one-time expenses and lowers capital costs. Additionally, the economies of scale and shared technology of cloud computing can eliminate many hidden costs. You can compare cloud computing and traditional IT costs across four dimensions: direct costs, scale costs, risk costs, and other costs. The following table provides a cost assessment model.
Cost factor | Traditional IT | Cloud computing | |
Direct costs | Capex | Data centers, power, and air conditioners Hardware devices and software licenses Idle costs from underutilized data centers | None |
Opex | O&M labor costs | Dynamically adjust resources with flexible, pay-as-you-go billing methods. Subscriptions cover service resources and expert services. | |
Scale costs | Upgrades and migration | Hardware and software upgrade costs Application and data migration costs | Eliminates concerns about hardware and software upgrades. Provides convenient tools for application and data migration. Incurs only minimal migration costs. |
System scale-out | Network costs for scaling out units at the machine level Idle device costs during scale-out periods | None | |
Risk costs | Upfront investment risk | One-time capital investment costs | Provision and adjust resources based on business needs. |
Data loss risk | Costs for data reliability assurance and backups | Provides complete data reliability and data backup tools. Avoid the risk of data loss at a minimal cost. | |
Business availability risk | High costs for disaster recovery infrastructure and high availability assurance | Provides complete disaster recovery and high availability solutions. Ensure business availability at a minimal cost. | |
Other costs | Opportunity cost | Costs incurred to seize business opportunities | Use out-of-the-box resources as needed. No need to provision resources in advance. |
R&D cost | Costs to maintain a technological lead | Use cloud computing PaaS and SaaS services to build business systems directly on leading technology. | |
From a Return on Investment (ROI) perspective, the value of a cloud strategy is most apparent in IT infrastructure. The main benefits are:
Reduced hardware and software investment: Cloud computing provides out-of-the-box IT resources, which lowers hardware costs for data centers and eliminates the need for one-time software purchases.
Lower Operations and Maintenance (O&M) personnel costs: Cloud service providers manage the underlying IT infrastructure. This reduces the need for personnel to manage hardware in data centers.
Reduced business losses from system failures: Cloud computing provides greater stability and a Service-Level Agreement (SLA) for products and services, which minimizes business losses caused by system failures.
Increased profits from elasticity: The elasticity of the cloud lets you handle high-concurrency scenarios and capture the resulting business profits.
More transparent business costs: Cloud computing expenses can be linked to the specific business they support, which makes the breakdown of business costs more transparent.
Implementing a cloud strategy to save costs and increase revenue involves additional costs. These include the costs of building the cloud strategy, acquiring the necessary capabilities, and migrating existing data centers to the cloud. The relevant chapters of this framework cover these topics.