Cloud Computing

Cloud computing is the delivery of different computing services through the Internet, which include tools and applications like data storage, servers, databases, networking, analytics, and software to offer fasterflexible resources, and economies of scale.

The concept of computing as a service has been around since the 1960s, but cloud computing emerged in the 2000s. The most important and unique features of cloud computing while being economical are its scalability and security.

Three major cloud service models:

• Infrastructure as a Service (IaaS)
• Platform as a Service (PaaS)
• Software as a Service (SaaS)

Three real-world domains where cloud computing was effective:

• Scientific Research
• Antivirus Applications
• Data Backup and Recovery

Economics of Cloud Computing is based on the pay-as-you-go method, meaning that your charge depends on the usage of the cloud service.