Introduction to Cloud Computing

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10 Questions

What is a primary advantage of using a public cloud?

Easy and inexpensive setup

Which type of cloud deployment model uses a combination of public and private cloud resources?

Hybrid Cloud

What is the primary benefit of using Infrastructure as a Service (IaaS)?

Relieves users of the need to buy and maintain physical servers

Which of the following is NOT a characteristic of a private cloud?

Easy and inexpensive setup

What is the primary focus of users in a Platform as a Service (PaaS) model?

Developing and deploying apps in a tested environment

What is the main advantage of cloud computing over owning and maintaining one's own IT infrastructure?

Avoiding the upfront cost and complexity

What is the concept behind cloud computing that makes the location of the service irrelevant to the user?

The abstraction of the location

What is the term used to describe cloud services offered publicly by a commercial provider?

Public Cloud

What is the benefit of cloud computing in terms of resources?

Flexible resources

Why is it called 'Cloud' computing?

Because the public telephone network was represented as a cloud

Study Notes

Cloud Computing Definition

  • Cloud Computing is the delivery of computing services, including servers, storage, databases, networking, software, analytics, and intelligence over the Internet, offering faster innovation, flexible resources, and economies of scale.
  • It enables companies to rent access to anything from applications to storage from a cloud service provider, avoiding the upfront cost and complexity of owning and maintaining their own IT infrastructure.

Cloud Computing Name

  • The metaphor of the cloud was borrowed from old telecoms network schematics, where the public telephone network (and later the internet) was represented as a cloud to denote that the location didn't matter.

Deployment Models

  • Cloud services are available through three deployment models: Public Cloud, Private Cloud, and Hybrid Cloud.
  • Public Cloud:
    • Owned and managed by a service provider.
    • Made available to the general public or a large industry group.
    • Easy and inexpensive setup, as hardware, applications, and bandwidth costs are covered by the provider.
    • No wasted resources, as you pay for what you use.
  • Private Cloud:
    • Operated solely for an organization.
    • May be managed by the organization or a third party.
    • Limits access to enterprise and partner network.
    • Retains high degree of control, privacy, and security.
  • Hybrid Cloud:
    • Combines public and private cloud resources to support the organization's computing needs while maintaining compliance with industry regulation.

Service Models

  • Cloud resources are provided in three service models: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS).
  • Infrastructure as a Service (IaaS):
    • On-demand delivery of computing infrastructure, including operating systems, networking, storage, and other infrastructural components.
    • Acts as a virtual equivalent to physical servers.
    • Relieves cloud users of the need to buy and maintain physical servers while providing the flexibility to scale and pay for resources as needed.
    • Popular examples include Digital Ocean, Amazon Web Services (AWS), Microsoft Azure, and Google Compute Engine (GCE).
  • Platform as a Service (PaaS):
    • Provides a computing platform where the underlying infrastructure (such as the operating system and other software) is installed, configured, and maintained by the provider.
    • Allows users to focus on developing and deploying apps in a tested and standardized environment.

Learn the basics of cloud computing, including its definition, benefits, and how it allows companies to rent access to computing resources and services over the internet.

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