Cloud computing

 

What is Cloud?

Cloud refers to the Network or Internet. In other words Cloud is something that is present at remote location. Cloud may be used to provide services over public and private networks, i.e., WAN, LAN or VPN. Applications like e-mail, web conferencing, customer relationship management (CRM) execute on cloud.

What is Cloud Computing?

Cloud Computing is information technology (IT) paradigm that refers to manipulating, configuring, and accessing the hardware and software resources remotely. It also offers platform independency, online data storage, infrastructure, and application.

Working models for cloud computing:

• Deployment Models
• Service Models

Deployment models

It define the type of access to the cloud. Cloud can have four types of access-

• Public cloud
• Private cloud
• Community cloud
• Hybrid cloud

Service Models

Cloud computing is based on service models. There are three types of basic service models -

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