Debunking Common IaaS Myths: What Real Cloud Computing Looks Like

What does real cloud computing look like? For ordinary users cloud computing often feels vague, so this article starts with basic concepts, clarifies four common misunderstandings, and shares four predictions.

IaaS (Infrastructure as a Service) provides fundamental computing, storage, and networking resources over the Internet, while PaaS (Platform as a Service) offers development platforms and SaaS (Software as a Service) delivers ready‑to‑use applications.

Misunderstanding 1: IaaS is just selling resources

IaaS actually consists of three layers:

Resource layer : physical compute, storage, network, power, IP, etc., sold at low margin.

Product layer : value‑added products built on the resource layer (e.g., storage, messaging, CDN, monitoring) that differentiate providers and generate most profit.

Service layer : additional services such as data transfer, website备案, security, which may not be directly profitable but are essential for user adoption.

Misunderstanding 2: IaaS has no technical depth

Although many open‑source platforms (OpenStack, Eucalyptus, CloudStack) exist, IaaS remains technically complex. It requires multi‑tenant resource pooling, virtualization of compute, storage, and network, large‑scale scheduling, performance optimization, and robust security isolation.

Misunderstanding 3: IaaS is insecure

Security is relative: large providers can often offer stronger protection than small startups lacking dedicated security teams, but no system is absolutely safe.

Misunderstanding 4: Public cloud only serves small‑to‑medium businesses

Large enterprises are increasingly adopting public cloud for non‑core workloads, with examples like Netflix, Lamborghini, and BMW leveraging cloud for cost reduction and design rendering.

Four predictions

IaaS growth : Global IaaS market projected to reach $8 billion in 2013, with rapid expansion in China.

Enterprise adoption : Mid‑size and large companies will continue moving workloads to public cloud, challenging traditional IT vendors.

SDx technologies : Software‑Defined Everything (storage, networking, datacenters) will mature and see widespread deployment.

Industry impact : Cloud lowers entry barriers for entrepreneurs, reshapes investment models, and reduces demand for traditional server sales.

Source: tech.sina.com.cn