Cloud Computing-1

What is cloud computing?

• Cloud computing is a general term for the delivery of hosted services over the Internet.
• Cloud Computing is the use of hardware and software to deliver a service over a network (typically the Internet). With cloud computing, users can access files and use applications from any device that can access the Internet. An example of a Cloud Computing provider is Google's Gmail.

Benefits 

The main benefits of cloud computing include :

• Self-service provisioning: End users can spin up computing resources for almost any type of workload on-demand.
• Elasticity: Companies can scale up as computing needs increase and then scale down again as demands decrease.
•  Pay per use: Computing resources are measured at a granular level, allowing users to pay only for the resources and workloads they use.
• No maintenance: Companies don’t have to worry about the maintenance and upgrade. Company can focus on business logic and functionality.

 

 

Types of Cloud

Cloud computing services can be :
Private :-  Private cloud services are delivered from a business' data center to internal users.
Public :-  Public cloud model, a third-party provider delivers the cloud service over the Internet.
hybrid. :-  Hybrid cloud is a combination of public cloud services and on-premises private cloud – with orchestration and automation between the two.

 Private Cloud

A private cloud is infrastructure operated solely for a single organization, whether managed internally or by a third party, and hosted either internally or externally. Private clouds can take advantage of cloud’s efficiencies, while providing more control of resources and steering clear of multi-tenancy.

Key aspects of private cloud

• A self-service interface controls services, allowing IT staff to quickly provision, allocate, and deliver on-demand IT resources
• Highly automated management of resource pools for everything from compute capability to storage, analytics, and middleware
• Sophisticated security and governance designed for a company’s specific requirements

  

 

Public Cloud

Public clouds are owned and operated by companies that offer rapid access over a public network to affordable computing resources. With public cloud services, users don’t need to purchase hardware, software, or supporting infrastructure, which is owned and managed by providers.

Key aspects of public cloud

• Innovative SaaS business apps for applications ranging from customer resource management (CRM) to transaction management and data analytics
• Flexible, scalable IaaS for storage and compute services on a moment’s notice
• Powerful PaaS for cloud-based application development and deployment environments

Hybrid Cloud

A hybrid cloud uses a private cloud foundation combined with the strategic integration and use of public cloud services. The reality is a private cloud can’t exist in isolation from the rest of a company’s IT resources and the public cloud. Most companies with private clouds will evolve to manage workloads across data centers, private clouds, and public clouds—thereby creating hybrid clouds.
 

Key aspects of hybrid cloud

• Allows companies to keep the critical applications and sensitive data in a traditional data center environment or private cloud
• Enables taking advantage of public cloud resources like SaaS, for the latest applications, and IaaS, for elastic virtual resources
• Facilitates portability of data, apps and services and more choices for deployment models