Cloud Computing

What Is Cloud Computing?

Cloud computing is the delivery of computing services over the internet on demand. These services include servers, storage, databases, networking, and software. Instead of owning and maintaining their own hardware, businesses rent these resources from a provider that operates large data center facilities and shares them among many customers.

How It Works

Cloud providers pool computing equipment and let customers draw on it as needed, often on a pay-as-you-go basis. A company can add capacity during a busy period and reduce it afterward, without buying machines that sit idle. Because customers are often billed for what they use, a provider's revenue can rise and fall with how heavily its customers consume services.

Services are commonly grouped into three broad types. Infrastructure services let the customer rent raw computing power and storage. Platform services provide tools for building applications that the provider manages. Software as a service delivers finished applications that the customer uses through a web browser.

Why It Matters to Investors

For investors, cloud computing can change how a company's spending is recorded. Buying servers is typically a capital expenditure, which is recorded as an asset and expensed gradually over time. Renting cloud services is more often an operating expense, which is deducted in the period it is paid. Many cloud businesses also earn recurring revenue through subscriptions, which can make their income more predictable than one-time sales. Companies that build and run these services are often grouped together, so their results may be influenced by broad trends in technology spending.

Advantages and Drawbacks

• Customers can scale resources up or down without large upfront purchases.
• Providers handle much of the maintenance, security updates, and hardware replacement.
• Heavy reliance on one provider can make switching later costly and difficult.
• Outages, data-handling regulations, and security concerns remain important risks.